Due by midnight ): Find the surface area of each sphere. Round to the nearest tenth, if necessary. Do not include units (i. e.in, ft, cm, etc.) (FR)*

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

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

What is the missing step in this proof ?