PLEASE HELP 35 points
What is the value of Y
What is the value of x

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Melissa is purchasing a $160,000 home and her bank is offering her a 30-year mortgage at a 4.9% interest rate. in order to lower her monthly payment, melissa will make a 20% down payment and will purchase 3 points. what will her monthly mortgage payment be? a. $645.98 b. $650.46 c. $662.93 d. $606.69