(72 + 9) is equal to which expression? ?

a) 9(6 + 1)
b) 3(6 +9)
c) 3(24 + 2)
d) 9(8 + 1)

Polygons efgh and e′f′g′h′ are shown on the coordinate grid: what set of transformations is performed on efgh to form e′f′g′h′? a. a translation 1 unit to the left followed by a 90-degree counterclockwise rotation about the origin b. a translation 1 unit to the right followed by a 90-degree counterclockwise rotation about the origin c. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the right d. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the left

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.