Which type of quadrilateral can exactly have 1 pair of parallel sides?

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

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

When you answer this can you explain