Can someone tell me if I’m correct

Calculate the average rate of change over the interval [1, 3] for the following function. f(x)=4(5)^x a. -260 b. 260 c. 240 d. -240

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3

Sally deposited money into a savings account paying 4% simple interest per year.the first year,she earned $75 in interest.how much interest will she earn during the following year?