Alfonso and Gracie have decided to join a gym! Gracie found a gym that costs $20 to join and charges $4 per class. Alfonso found a gym that costs $34 to join but only $2 per class. a. Write a system of equations modeling the Gyms’ charges.

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks