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PIT_PIT [208]
3 years ago
6

Nancy is very happy with the service at the hotel she is staying in. She wants to tip the room service waiter 15 percent of the

food bill, which is $120.75. How much should she tip?
Mathematics
1 answer:
anyanavicka [17]3 years ago
7 0
$18.11 because 20.75/x=100/15
<span>(120.75/x)*x=(100/15)*x       - </span>we multiply both sides of the equation by x
<span>120.75=6.6666666666667*x       - </span>we divide both sides of the equation by (6.6666666666667) to get x
<span>120.75/6.6666666666667=x </span>
<span>18.1125=x </span>
<span>x=18.1125</span>
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3 0
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What is the speed of a runner who completes the 800 m race in one minute and 40 seconds?
skelet666 [1.2K]
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First let’s convert the time to seconds. There are 69 seconds in a minute so 1 minute and 40 seconds is 60 +40 second which totals to 100 seconds
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7 0
3 years ago
Your friend has prepared his mountly budget and asks you if he has overlooked anything in this planning. Which of the following
cluponka [151]
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3 years ago
The number of E.coli bacteria cells in a pond of stagnant water can be represented by the function below, where A represents the
liq [111]

Answer:

  • <u>Option B. 59%</u>

Explanation:

The function that represents the number of E.coli bacteria cells per 100 mL of water as the time t years elapses is:

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The base, 1.123, represents the multiplicative constant rate of change of the function, so you just must substitute 1 for t in the power part of the function:

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Then, the multiplicative rate of change is 1.590, which means that every year the number of E.coli bacteria cells per 100 mL of water increases by a factor of 1.590, and that is 1.59 - 1 = 0.590 or 59% increase.

8 0
3 years ago
A public health department charges $25.00 for a flu shot.The vaccine costs $0.78 per shot, a syringe costs $0.51, and the labor
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They make $3797.58

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