PLEASE HELP I DONT HAVE LONG

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 effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?