The temperature started at 89°f. if the temperature went up 6°f and then down 12°f, whats is the temperature difference relative to the high temperature?

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

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

Can someone me do math because i am having a breakdown rn because i don’t get it