HELLP AGAIN PLS COME ON MATHS

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

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account