Question

The cost in dollars, C, of renting a carpet cleaner is given by the linear equation

C = 20 + 25x, where x is the number of days.

Use this model to find the number of days it can be used for $170.
A) 4
B) 5
C) 6
D)

Answer 1

6

Explanation:

Answer 2

Answer: C) 6

Explanation:

Given : The cost in dollars, C, of renting a carpet cleaner is given by the linear equation
`C = 20 + 25x`, where x is the number of days.

To find the number of days it can be used for $170, we put C= 175 in the equation, we get

`175 = 20 + 25x\\\\\Rightarrow\ 25x=170-20\\\\\Rightarrow\ 25x=150\\\\\Rightarrow\ x=(150)/(25)=6`

Hence, the required number of days = 6.