Question

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

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

Answer 1

First of all why is there 2 similar equation connected to one another?

Second in order to solve this all you need to do is plug in the number and solve for x

For 485

85x+60=485
85x=420
X=5

Do the same thing and you get 3

Answer 2

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.

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

`315=85x+60`

=>
`85x=315-60`

=>
`85x=255`

x = 3 trips.

2. When C = 485

`485=85x+60`

=>
`85x=485-60`

=>
`85x=425`

x = 5 trips.