Which algebraic expression is equivalent to the expression below 7(3x + 12) + 12x-16 1) 33x + 68 2) 21x + 68 3) 33x + 100 4) 33x + 84

Based on what i know about mean, this doesn't add up.

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

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