Answer:
48
Step-by-step explanation:
V=1/4h(^radical)-a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4
The expression to calculate the total cost of a jacket with an original price of x is 0.7x + 5 % of 0.7x
Solution:
Given that at a clothing store, jackets are on sale for 30% off
Sales is 5 %
To find: Expression to calculate the total cost of jacket
Let "x" be the original price of Jacket
Price of jacket after offer = original price of Jacket - 30 % of original price
Price of jacket after offer = x - 30 % of x
Price of jacket after offer =
The total cost of jacket is sum of price of jacket after offer and sales tax
total cost of jacket = price of jacket after offer + sales tax
total cost of jacket = 0.7x + 5 % of 0.7x
Thus the expression to calculate the total cost of a jacket with an original price of x is 0.7x + 5 % of 0.7x
A
y = 10x + 5; 45 complete books
B
y = 15x + 15; 65 complete books
C
y = 5x + 15; 45 complete books
D
y = 15x + 10; 100 complete books
The correct option is C. The function should be:
y = 5x + 15
This function gives the correct number of books downloaded after 3 hours, and the slope is also 5 books per hour.
The other options are incorrect.
Option A: y = 10x + 5. This function does not give the correct number of books downloaded after 3 hours.
Option B: y = 15x + 15. This function gives the correct number of books downloaded after 3 hours, but the slope is not 5 books per hour.
Option D: y = 15x + 10. This function does not give the correct number of books downloaded after 3 hours.