The lengths of two sides of a triangle are shown below:

side 1 : 3x^2 - 2x -1
side 2 : 7x +4x^2 + 8

the perimeter of the triangle is 15x^3 +4x^2 - 4x - 11.
part A: what is the total length of the two sides 1 and 2, of the triangle? (5 points)

part B: what is the length of the third side of the triangle? (5 points)

35-60 students are taking math.

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x

it's a proportional graph.

step-by-step explanation:

8 x 5 = 40         (and you have -8x and -5y)

x= absiss

y= orderly

so you have a proportional graph.