Determine which gym's membership grows faster from Month 2 to Month 4 by calculating the average rates of change.

Gym A is growing faster

Gym A gained 13 members between months 2 and 4

Gym B gained 10 members between months 2 and 4

Step-by-step explanation:

Gym A:  (2,20) (4,46)

rate of change = (46-20)/(4-2)  =  26/2 or 13

Gym B:  (2,40) (4,60)

rate of change = (60-40)/(4-2)  =  20/2 or 10

y=mx+b

step-by-step explanation:

m slope, b y-intercept