Nicole wants to fill her water bottle between classes

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

What is the expression in factored form? 225x^2 - 144 a. 9(5x+4)^2 b. 9(5x-4)^2 c. 9(4x+5)(4x-5) d. 9(5x+4)(5x-4)

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?