Answer:
(-4.5, 2.5)
Step-by-step explanation:
The solution for two graphed linear equations is the intersection (The point where two lines meet or cross).
Distribute the first set of parenthesis
<span><span>15<span>r<span><span>2</span><span></span></span></span>−20r+6r−8</span><span>
Combine like terms
</span><span><span>15<span>r<span><span>2</span><span></span></span></span>+(−20r+6r)−8</span><span>
Simplify your answer
</span><span>15<span>r<span><span>2</span><span></span></span></span>−14r−8
*Answer is </span>15r^2−14r−8*<span><span>
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Subtract $3 from $21 to get the cost of skating for three hours without the rental fee. 21-3=18. $18 was spent on skating for three hours so you'll divide 18 by 3 to get the hourly rate. 18/3=6.
C(x)=6x+3