Khan academy question multiple choice

C:  3x + 80 + 2x = 180

Step-by-step explanation:

A straight line is equal to 180 degrees total the find x, you would add the number within the line and make it equal to 180.

3x + 80 + 2x = 180

add like terms

5x + 80 = 180

subtract 80 from each side

5x = 100

divide each side by 5

x = 20

b is the answer that makes most sense

step-by-step explanation:

the multiples of 15 are 15, 30,45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195,   210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375,   390, 405, 420, 435, 450, 465, 480, 495, 510, 525, 540, 555, 570, 585, 600, 615, 630, 645, 660, 675, 690, 705, 720, and 735.

the factors of 15 are 1, 3, 5, and 15.

hope that , fam!

-une, your fren : )