Please help me i really need help please

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

What are the domain and range of f(x)= -log5(x+2)

Adan has decided to purchase an $9000 car. he plans on putting 20% down toward the purchase and financing the rest at 7.9% interest rate for 3 years. find his monthly payment a) $225.29 b) $298.81 c) $204.78 d) $236.89