What is the average rate of change for this exponential function for the interval from x=2 to x=4?

Scott harris can invest $7,000 in a 1-year cd that earns interest at an annual rate of 4 percent compounded monthly. the amount per $1.00 is 1.040742. he can also invest $7,000 in a 1-year cd at annual rate of 4 percent compounded quarterly. the amount per $1.00 is 1.040604. what is the difference in the amount of interest earned for each investment? a) $0.96 b) $0.81 c) $0.87 d) $0.88

What is the value of x in the equation7x+2y=48 when y=3

0.75,1.75,2.75,3.75 is arithmetic or geometric?