Question

question 10
the total cost (c) in dollars of renting a sailboat for n days is given by the equation
$c = 120 + 60n$.
if the total cost was $360, for how many days was the sailboat rented?
a 2
b 4
c 6
d 8

Explanation:

Step1: Substitute total cost into formula

Substitute $c=360$ into $c=120+60n$:
$360 = 120 + 60n$

Step2: Isolate the term with $n$

Subtract 120 from both sides:
$360 - 120 = 60n$
$240 = 60n$

Step3: Solve for $n$

Divide both sides by 60:
$n = \frac{240}{60}$

Answer:

B. 4