Question

The total cost C (in dollars) to participate in a triathlon series is given by the literal equation C = 90x + 35, where x is the number of triathlons in which you participate. a. Solve the equation for x b.In how many triathlons do you participate if you spend a total of $305?

Answer 1

a.
C=90x+35
C-35=90x
x= (C-35)/90

b.
305=90x+35
270=90x
x=3

3 triathlons