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Liula [17]
2 years ago
7

You have a coupon for 30% off your total order.

Mathematics
1 answer:
Ostrovityanka [42]2 years ago
6 0

Answer:

you pay $69.74

Step-by-step explanation:

total cost without coupon: 15+65+14 = 94

apply the 30% discount ⇒ 94 × .30 = 28.20

subtract the savings ⇒ 94.00 - 28.20

total, after coupon, before tax ⇒ 65.80

apply 6% tax to 65.80  ⇒  65.8 × .06  ⇒ 3.94

add tax to cost after coupon ⇒  65.80 + 3.94

you pay $69.74

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A)
145 - 5d
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b)
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A bike rental company charges a fee per hour. The charge, in dollars, is the same each hour. The ordered pairs (3, 13.50) and (5
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If the function is y = 4.5x. Then the rate of change of the function expressed as a unit rate will be 4.5.

<h3>What is the linear system?</h3>

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

A bike rental company charges a fee per hour.

The charge, in dollars, is the same each hour.

The ordered pairs (3, 13.50) and (5, 22.50) represent the corresponding hours, x, and cost, y.

Then the linear equation is given as

\begin{aligned} \rm  y - 22.5 &= \rm \dfrac{22.5 - 13.5}{5 - 3} (x-  5)\\\\\rm y - 22.5 &= \rm 4.5x - 22.5\\\\\rm y &= \rm 4.5x \end

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\rm \dfrac{dy}{dx}  = \dfrac{d}{dx} (4.5x )\\\\\dfrac{dy}{dx}  = 4.5

More about the linear system link is given below.

brainly.com/question/20379472

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Step-by-step explanation:

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