If the quadratic function f(x)= ax^2+bx+c produces a parabola with the vertex on the x-axis which of the following statements is true?

It would have to be B, because with a vertex on the x-axis, the only point it would touch the x-axis is the vertex, thus proving that this quadratic has only one zero.

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

The answer is 10. and if you go by pemdas you would 1. multiplication 2. division 3. addition 4. subtraction