Is 3 times 5 hundreds. Equal 15 hundreds

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

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

Which value would be a solution for x in the inequality 47-4x< 7