1. Use a diagram to show that (3x + 1)(x + 2) is equivalent to 3x² + 7x + 2.

the square root of what number? if you add that, then someone will probably answer the question.

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

b if for most of the graph

d if y intercept

step-by-step explanation: