Estimate the quotient of 239.63 ÷ 7.51

What is the number 321,000,000 in scientific notation? also what is the number? ?

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

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