Equations problem solving worksheet 8.3-8.4

The scores by Pittsburgh Steelers given the points scored by New Orleans Saints to be 32 is 10 points.
3x + 2 = 32
3x = 32 - 2
3x = 30
x = 30/3
x = 10 points
2.
Danielle's age + counselor = 28
x + 3x = 28
4x = 28
x = 28/4
x = 7
So,
Age of girls in Danielle's camp = x = 7 years
Age of counsellor = 3x
= 3(7)
= 21 years
3.
143.70 = 3(39.95) + x
143.70 = 119.85 + x
143.70 - 119.85 = x
x = $23.85
4.
Perimeter of pentagon = Length of each side × number of sides
7 = x × 5
7 = 5x
x = 7/5
x = 1.4 inches
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