Which statement describes the first step to solve the equation by completing the square?

3x^2+18x=21

Multiply both sides of the equation by 19 .

Add 9 to each side of the equation.

Multiply both sides of the equation by 13 .

Add 81 to each side of the equation.

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

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

Graph the line y=4/3 x+1 . use the line tool and select two points on the line.