How many seven digit phone numbers can be formed if repetition is allowed

What is the location of maximum over the interval [-3,1.5] for the graphed function?

One x-intercept for a parabola is at the point (-0.33,0). use the quadratic formula to find the other x-intercept for the parabola defined by the equation y=-3x^2+5x+2

The table represents a function. what is the value of f(-1)? f(x) o f(-1) = -3 -5 of(-1) = -1 of(-1) = 0 of(-1) = 6 - 3 whats the answer