The daily cost of car rental (let's call it C) can be expressed as:
C = 30 + 0.20x, where x = the number of miles traveled in a day
If C = 83.60, then we have:
83.60 = 30 + .20x
53.60 = .20x
268 = x
Paul traveled 268 miles
Michael A.
tutor
Ok. The perimeter of any polygon is the sum of the measurements of each of its sides. A triangle has three sides. Let's allow x to equal the smallest side. Then the third side = 3x. The remaining side can be expressed as x + 18. We know the perimeter of this triangle is 43. So we have:
43 = x + (x + 18) + 3x We need to combine like terms
43 = 2x + 18 + 3x
43 = 5x + 18
25 = 5x
x = 5 in.
The 3rd side is 3x = 3 * 5 = 15 in.
The remaining side is x + 18 = 5 + 18 = 23 in.
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10/08/16
Daniella C.
10/08/16