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?

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

Where x is the number of ski trips you take.

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

=>

=>

x = 3 trips.

2. When C = 485

=>

=>

x = 5 trips.

35 is an outlier

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places