Question

The total cost C (in dollars) to participate in a ski club is given by the literal equation C=85x+60, where x is the number of ski trips you take.

a. Solve the equation for x.

x=

b. How many ski trips do you take if you spend a total of $315? $485?

ski trips costs $315.

ski trips costs $485.

Answer 1

x = 5

Explanation:

The total cost C (in dollars) to participate in a ski club is given by the literal equation :

C=85x+60C=85x+60

Where x is the number of ski trips you take.

1. When C = 315 ;substituting the value of C in the above equation.

315=85x+60315=85x+60

=> 85x=315-6085x=315−60

=> 85x=25585x=255

x = 3 trips.

2. When C = 485

485=85x+60485=85x+60

=> 85x=485-6085x=485−60

=> 85x=42585x=425

x = 5 trips.