3 years ago

A store discounts a stereo from 130 to 87.50. What is the percent discount?

Mathematics

1 answer:

Minchanka [31]3 years ago

5 0

42.5 percent

Subtract 130 and 87.50

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A Warming Liquid - A liquid is taken out of a refrigerator and placed in a warmer room, where its temperature, in F, increases o

IRISSAK [1]

Answer:

The temperature at the start is 35F

The temperature of the room is 74F

Step-by-step explanation:

Given

$T(m) = 74 - 39(0.87)^m$

Solving (a): The temperature at the start.

To do this, we set: $m = 0$

So, we have:

$T(0) = 74 - 39(0.87)^0$

$T(0) = 74 - 39*1$

$T(0) = 74 - 39$

$T(0) = 35$

Hence, the temperature at the start is 35F

Solving (b): The room temperature

We have:

$T(m) = 74 - 39(0.87)^m$

To get the temperature of the room, we simply remove the exponential function.

So, we have:

$Initial = 74$

Hence, the temperature of the room is 74F

8 0

3 years ago