Question

Mighty Plumbers charges a flat fee of $70 and an additional $28 per hour to fix your broken toilet.which function models the total cost, C(x), of hiring this company for x hours?a. C(x)=28x+70b. C(x)=28x-70c. C(x)=7x+28d. C(x)=70x-28

Answer 1

$a\text{. }C(x)=28x+70$

Explanation

Step 1

Let

x represents the number of hours it takes to fix your broken toilet

the cost forfor the time fixing the toilet = $28* x

Mighty Plumbers charges a flat fee of $70

charge=70

total cost =C(x)

Then

the total cost is

the total cost= the flat fee plus the cost of the time for fixing the broken toilet

Step 2

replace

$\begin{gathered} C(x)=70+28x \\ re-\text{order} \\ C(x)=28x+70 \end{gathered}$

so,the answer is option a. C(x)=28x+70