Will give brainliest. Explain in detail, please and thank you. You went to lunch with your friend, and the bill was $19.00. Your lunch is $3.00 more than your friend's. How much was your friend's lunch?

f+ 3 = 19; $8.00
3f + 2 = 19; $8.00
2 + 3 = 19; $8.00
2 - 3 = 19; $8.00

Step-by-step explanation:

f, your friends lunch

f + 3, your lunch

f + f + 3 = 19

2f + 3 = 19

2f = 16

f = 8

Your friends lunch was $8

I hope this helped

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6