Question

A car rental costs $50 for the first day. Additional days cost $35 per day, unless the car is rented for 7 days or more, in which case there is a 10% discount on the daily rate. Identify the expression which represents the cost of renting a car if the car has been rented for more than a week.
A.) 45+35x
B.) 45+31.5x
C.) 50+35x
D.) 50+31.5x

Answer 1

the answer is D,I think it's help

Answer 2

Answer:

Option D $\ 50+\ 31.5x$

Step-by-step explanation:

Let

x------> the number of days

y----> the cost of renting a car

we know that

For $x<7\ days$

$y=\ 50+\ 35x$

For $x\geq 7\ days$

The rate is equal to

$0.90*\ 35=\ 31.5$

so

$y=\ 50+\ 31.5x$

In this problem. the car has been rented for more than a week

therefore

$x> 7\ days$

The cost of renting a car is equal to

$y=\ 50+\ 31.5x$