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Elis [28]
3 years ago
8

How do we find the value of -q in the equation -q-3=7

Mathematics
1 answer:
Cloud [144]3 years ago
3 0

-q is -10. Because the number sentence equals to -q=7+3. So q = -10.

put in(recheck): --10=7+3

                          +10=10

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Elena is paid a constant rate for each hour she works. The table shows the amounts of money that Elena earned for various amount
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Constant rates are used to illustrate linear functions.

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  • The function that models the table is: \mathbf{f(x) = 9x }
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<u>(a) The average rate of change</u>

This is calculated using:

\mathbf{Rate = \frac{y_2 -y_1}{x_2 -x_1}}

So, we have:

\mathbf{Rate = \frac{31.5-22.50}{3.5 - 2.5}}

\mathbf{Rate = \frac{9}{1.0}}

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Hence, the average rate of change is $9.0 per hour

<u>(b) A function that models the table of values</u>

Let x represent hours, and y represent the earnings.

So, we have:

\mathbf{y =m (x - x_1) + y_1}

Where:

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So, we have:

\mathbf{y = 9(x - 2.5) + 22.5}

Expand

\mathbf{y = 9x - 22.5 + 22.5}

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Represent as a function

\mathbf{f(x) = 9x }

Hence, the function that models the table is: \mathbf{f(x) = 9x }

<u>(c) Amount earned for 7.5 hours</u>

This means that x = 7.5

So, we have:

\mathbf{f(7.5) = 9 \times 7.5 }

\mathbf{f(7.5) = 67.5}

Hence, the amount earned in 7.5 hours is $67.5

Read more about constant rates at:

brainly.com/question/23184115

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Its been good so far. My stomach hurts a little it but I ate a chocolate muffin and a UN-crust able so that's good

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