You and three friends are going out to eat at a local restaurant to celebrate your birthday. Your grandmother gave you money to pay for your birthday dinner and you have a coupon, so you are
"picking up the tab" for the meal. (Pay for everyone.) Using the space below, show how much
the meal cost including tax, tip and the discount.
Restaurant

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.

parallelogram is the   answer

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