Question

15
for babysitting, nicole charges a flat fee of $3, plus $5 per hour. write an equation for the cost, $c$, after $h$ hours of babysitting. (a.fgr.9.5)
a) $c = 5h - 3$
b) $c = 3h + 5$
c) $c = 5 - 3h$
d) $c = 5h + 3$

Explanation:

Step1: Identify fixed and variable costs

Flat fee (fixed) = $\$3$, hourly rate (variable) = $\$5$ per hour.

Step2: Define total cost formula

Total cost $C$ = (hourly rate $\times$ hours) + flat fee.
Expression: $C = 5h + 3$

Answer:

D. $C = 5h + 3$