Answer:
If the equation is 3^x=n (it isnt showing up properly)
Part A: any number greater than 1 will work. Say 2.
Part B: any number less than or equal to 1.
Step-by-step explanation:
If you set x=2, 3^2=9 9>3
If you set x=0, 3^0=1 1<3

The constant of proportionality,m, is 3 (option B)
5k²-8k-45k+72 = 5k²-53k+72
Answer: 5k² - 53k + 72