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3 years ago

Find the total cost to the nearest cent. $46 shoes; 2.9% tax

Mathematics

2 answers:

creativ13 [48]3 years ago

7 0

All you had to do is multiply 0.029 and 46 and you’ll get the answer

Hope this helps

gladu [14]3 years ago

3 0

Answer:

The answer is $47.33

Step-by-step explanation:

Take $46 and multiply it by the tax rate .029, then add that number back to the $46 as follows:

46 x .029 = 0.334

46 + 0.334 = 46.334

Round to the nearest cent,

$46.33.

Final answer.

Good luck!

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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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(a) The average rate of change

This is calculated using:

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

So, we have:

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

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

$\mathbf{Rate = 9.0}$

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

(b) A function that models the table of values

Let x represent hours, and y represent the earnings.

So, we have:

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

Where:

m =Rate = 9.0

So, we have:

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

Expand

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

$\mathbf{y = 9x }$

Represent as a function

$\mathbf{f(x) = 9x }$

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

(c) Amount earned for 7.5 hours

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