Help
Me I just need to write down if it’s a function or not for 4 of these

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 perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

What term makes it inconsistent y=2x - 4