Find the square. (3m + 3)^2
a. 9m^2 + 18m – 9
b. 9m^2 + 9m – 9
c. 9m^2 – 18m + 9
d. 9m^2 + 18m + 9

Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove