6x + y + 5z = 8
9x - 3y-z = 5
x-9y-6z = -9

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?

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

Atown has a population of 12000 and grows at 3.5% every year. what will be the population after 7 years, to the nearest whole number?