The wavelength of yellow light in a spectrum is about 0.00002 inches. Which number best approximates this length as a power of 10?
A. 2 x 105
B. 2 x 10-4
C. 2x 10-5
D. -2 x 105

Given the quadratic function f(x)=3x^2-24x+49 a. use “completing the squares” to convert the quadratic function into vertex form b. state the vertex c. find the x and y intercepts d. graph the function