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Answer: Choice A</h3>
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Explanation:
Place your pencil on the curve. Then draw a straight vertical line either up or down until you reach the x axis. If you were to start at the left endpoint, and work your way to the right, you'll eventually shade the interval along the x axis.
We have two separate intervals being shaded in. There's a small gap from 3 to 4 that isn't shaded in.
Refer to the diagram below.
Answer:
Step-by-step explanation:
Let's call lifeguarding L and car washing W. In order to write a system, we need to first separate the NUMBER of hours worked from the MONEY earned, because they are very different things.
If she works 10 hours, that is the number of hours worked between both jobs. Therefore, the equation for the NUMBER of hours worked is
L + W = 10.
If she earns $13 an hour lifeguarding, the expression for that is 13L; if she earns $12 an hour car washing, the expression for that is 12W. The MONEY she earned together by doing both those jobs is
13L + 12W = 124
There you go!
Answer:
78.5
Step-by-step explanation:
You can put this solution on YOUR website!
(2x+5)(6x-1)=120
2x(6x-1)+5(6x-1)=120
12x^2-2x+30x-5=120
12x^2+28x-5-120=0
12x^2+28x-125=0
Find the roots of the equation by quadratic formula