MATHEMATICS HIGH SCHOOL

Bicycle rental on the seawall at the beach cost a mandatory minimum of $5 for the first hour and then $4 for each additional hour. When three or more bikes are rented together, the owner gives a 20% discount on the additional hours. If Marty and his family rent four bicycles, identify the expression which represents the cost.A) 12.8x + 20x
B) 12.8x + 20
C) 12.8x + 16x
D) 32.80x

Answers

Answer 1
Answer:

Answer:  The correct option is (B) 12.8x+20.

Step-by-step explanation:  Let, 'x' be the number of hours for which the bicycle is rented except the first hour.

Then, according to the given information, the cost of renting 1 bicycle is given by

c=4x+5.

There is a discount of 20% on additional hours 'x' when three or more bikes are rented together.

Since Marty and his family rent four bicycles, so the discount on additional hours for 1 bicycle is given by

D=20\%* 4x=(20)/(100)* 4x=(4)/(5)x.

Therefore, the total cost of renting 4 bicycles is given by

C=4\left(5+(4x-(4)/(5)x)\right)=4\left(4+3.2x\right)=12.8x+20.

Thus, the required expression for the cost is 12.8x+20.

Option (B) is correct.

Answer 2
Answer: Cost = fix cost + hourly cost - discount

Cost = 4* [5 + 4x - 4x(20/100)] = 4*[5 + 4x - 0.8x] = 4*[5 + 3.2x] = 20 + 12.8x

Answer: option B) 12.8x + 20

Related Questions

What is 16.403 round to the nearest tenth?
Last year Frank had a total income of $58,800. He sold a house and made a profit of $27,940. He also had monthly income of $80 from investments. Frank works 25 hours per week as an hourly employee.How much more an hour would Frank had to have earned last year in order to have a total income of $59,970?
Solve the equation. If there is no solution, write no solution. 2|n| – 12 = 16
How to solve for y if  the equation is y=5/2x + 5 if x is zeroplease show step by step how to solve
If (-3, y) lies on the graph of y = 3^x, then y = 1/27 -1 -27

The roots of an equation are x = -1 ± i. The equation is x2 + + 2 = 0.

Answers

im pretty sure its x=-1

(-7x²-7x-7)-[(7x³-9x²-20)+(4x-11)]]=?(5x⁴+8x²+2)+7(5x⁴-3x²)=?
Please explain the work behind the solution

Answers

(-7x^2-7x-7)-[(7x^3-9x^2-20)+(4x-11)]]=\n=-7x^2-7x-7-(7x^3-9x^2-20+4x-11)=\n=-7x^2-7x-7-7x^3+9x^2+20-4x+11=-7x^3+2x^2-11x+24\n\n (5x^4+8x^2+2)+7(5x^4-3x^2)=5x^4+8x^2+2+35x^4-21x^2=\n=39x^4-13x^2+2

What is x^3=8/27? pls help

Answers

Answer:x=2/3 =0.6667

Step-by-step explanation:

...

Which of these careers would not require a university education

Answers

Emergency medical technician is the correct answer I am one and i did not require a university carreer

The angle measure in degrees that corresponds to 7/10 of a circle is

Answers

Answer:

252\°

Step-by-step explanation:

we know that

The complete circle subtends a 360\°

so by proportion

Find how many degrees corresponds to 7/10 of a circle

(360)/(1)(degrees)/(circle) =(x)/((7/10))(degrees)/(circle) \n \nx=(7/10)*360\n \nx= 252\°
a circle contains 360º

180º = π radians

Why can't you make these simple calculations and conversions ??

(7/10) * (360) = 252º

252º/180º = x radians / π radians
solve for x...do something !!

[7π/5 radians ]

What is the area of the figure? A. 90 mm2 B. 110 mm2 C. 130 mm2 D. 180 mm

Answers

I see two shapes in the given figure. A rectangle and a triangle.

We need to get the area of the rectangle and triangle. We then deduct the area of the triangle from the area of the rectangle to get the area of the shaded portion.

Area of the rectangle = length * width 
A = 11 mm * 10 mm 
A = 110 mm²

Area of the triangle = (hb)/2
A = [(11mm-7mm)(10mm)] ÷ 2
A = (4mm*10mm) / 2
A = 40mm²/2
A = 20mm²

 110 mm² - 20mm² = 90 mm²  Choice A.
Other Questions
What type of expense is a toll
5/8 +5/12 in simplest form
Find the area of a sector of this circle that is intercepted by a central angle measuring 30°
Write each sum as a product of the GCF of two numbers 75 and 90