Convert 43.9766m2 to cm3 retaining the proper number of s. f

The graph of y = ax^2 + bx + c is a parabola that opens up and has a vertex at (0, 5). what is the solution set of the related equation 0 = ax%2 + bx + c?

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?