Question

a website subscription costs $15 monthly plus a one - time setup fee of $20. write the equation for the total cost c for n months.
c. $c = 35n$
c. $c = 15n + 20$
c. $c = 20 - 15n$
c. $c = 20n + 15$
a gym membership includes a monthly fee of $30 and a one - time joining fee of $50. write an equation for the total cost t after m months.
t. $t = 50m + 30$
t. $t = 30 + 50m$
t. $t = 80m$
t. $t = 30m + 50$

Explanation:

Step1: Identify fixed and variable costs (website)

Fixed cost = $20, variable cost = $15/month. Total cost: $C = 15n + 20$.

Step2: Identify fixed and variable costs (gym)

Fixed cost = $50, variable cost = $30/month. Total cost: $T = 30m + 50$.

Answer:

b. $C = 15n + 20$
d. $T = 30m + 50$