1. Renting a bicycle costs $30 for the first day and $10 for each additional day.a. Write an equation in simplified form to find the total cost C for a bike rental ithe number of days d it was rented.b. Find the cost of renting a bike for 5 days.Answer:

Answers

Answer 1

Answer: Part a: 30+10d That is your equation. 30 for the start and 10 more for each additional day.
Part b: So there are 4 additional days. Let's fill in the equation and solve.
30+10*4
30+40
$70
The answer is $70

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Stan made 14 of 20 free throws in basketball practice. Predict the number of free throws he would make if he attempted 100 free throws.

Answers

if i did my math right, i believe the answer is 70.

70 out of 100. It's a ratio of 14 to 20 and X to 100.

Can someone please help me?

Answers

Answer:

1 solution --> y=-13/2

Step-by-step explanation:

7(y+3)=5y+8

7y +21=5y+8

2y=8-21

2y=-13

y=-13/2

Write two ways to make 15

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5 x 3 = 15
10 + 5= 15

$7.50 admission; 20% off; 5.75% tax

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$45.05 i did the work but i am on my laptop so i cant show you sorry

Answer:

45.05

Step-by-step explanation:

hope this works haha

A collection of 8 backpacks has a mean weight of 14 pounds. A different collection of 12 backpacks has a mean weight of 9 pounds. What is the mean weight of the 20 backpacks? Explain how you found your answer.

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Total weight of the first 8 backpacks
8*14
112 pounds

Total weight of the second 12 backpacks
12*9
108

Total weight of the whole 20 backpacks
112+108
220

So the mean weight of the 20 backpacks
220 / 20
11

Answer: 11

Step-by-step explanation:

We know that mean of a number of observations is given by :-

$\text{Mean}=\frac{\text{Sum of all observations}}{\text{Number of observations}}\n\n\Rightarrow\ \text{Sum of all observations}=\text{Mean*Number of observations}$

Given: The mean weight of 8 backpacks = 14 pounds

$\Rightarrow\ \text{Sum of weight of 8 backpacks}=14*8=112$

The mean weight of different 12 backpacks =9 pounds

$\Rightarrow\ \text{Sum of weight of 12 backpacks}=12*9=108$

Now, Total sum of all observations = 112+108=220 pounds

Now, the mean weight of the 20 backpacks is given by :-

$\text{Mean}=(220)/(20)=11$

What is the equation of the graphed line? Hint: Determine the slope of the line y = x .

Answers

y=-5x

you can use point slope or slope intercept to find this one. i did it by using slope intercept, y=mx+b
b in this case is 0, and then to find m you use (y-y)/(x-x) or (-5-0)/(1-0) = -5

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