An exterminator charges $80 to visit a home and $35 to spray each room. If the total

1 answer:

3 0

Your variable is r for the number of rooms

So your equation is 395= 35*r + 80

First subtract 80 from both sides of the equation

315 = 35r

Next divide 35 from both sides of the equation

And your final answer is 9 rooms in total he sprayed.

Total cost = 35(#ofrooms) + 80

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How do you find x? and how do you round to the nearest tenth?

expeople1 [14]

Hey there!

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First, let's plug in what we know to the Pythagorean Theorem: $2.1^2 = 1.4^2 + b^2$

Next, we'll simplify to that $b^2$ is by itself:

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Then, we'll find the square root of 2.45, multiply that by 2 and round to the nearest tenth:

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How to round to the nearest tenth:

In a decimal, the tenth is the first number after the decimal point. To round to the tenth, if the number in the hundredth place is less than 5, you keep the number as it is, but if the number in the hundredth place is more than 5, you increase the number in the tenth place by 1.

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3 years ago

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adell [148]

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Hope it is clear:)