A package 35 pencils costs $7.00. At this rate, what is the cost of 1 pencil?

$0.20

Step-by-step explanation:

We need to find the unit rate in order to find the price of 1 pencil.

Divide the price by the amount.

7/35=1/5

A dollar is 100 cents, so the price is 1/5 of 100, or 20 cents.

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step-by-step explanation:

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.