If the value of a in the quadratic function f(x) = ax2 + bx + c is 4, the function will. A) open down and have a maximum
B) open up and have a maximum
C) open down and have a minimum
D) open up and have a minimum

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

Find the slope of the line passing through a pair of points

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.