Do i multiply (200 is 1/10) to get the correct answer of 2000 ?

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 this question ?

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.