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SashulF [63]
3 years ago
7

Which of the following exponential functions goes through the points (1, 20) and (2, 80)?

Mathematics
2 answers:
levacccp [35]3 years ago
8 0
F(x) = 5(4)^x is the correct answer.
klio [65]3 years ago
5 0

Answer:

Option C is correct

y = 5 \cdot 4^x

Step-by-step explanation:

An exponential function is given by:

y=ab^x             .....[1]

where, a is the initial value and b is a non-negative number.

As per the statement:

An exponential functions goes through the points (1, 20) and (2, 80)

Substitute these in [1] we have;

For (1, 20) we have;

20 = ab            .....[2]

For (2, 80), we have;

80 = ab^2            ......[3]

Divide equation [3] by [2] we have;

4 = b

Substitute this in [2] we have;

20 = 4a

Divide both sides by 4 we have;

5 = a

or

a = 5

Substitute the given values we have;

y = 5 \cdot 4^x

therefore, the following exponential functions goes through the points (1, 20) and (2, 80) is, y = 5 \cdot 4^x

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kykrilka [37]
£36.48.

1. Multiply 38 by 0.04 (4% in decimal) and you’ll get 1.52

2. Subtract 1.52 from 38 to get 36.48
3 0
3 years ago
A hockey season ticket holder pays $88.56 for her tickets plus $5.00 for a program each game. A second person pays $19.76 for a
Aleksandr-060686 [28]

Answer: x = 6

Step-by-step explanation: If you take 88.56 + 5x = 19.76x, an equation, you should first rearrange the variables to the left side of the equation: 5x - 19.76x = -88.56.

Next, you should combine your like terms. So, -14.76 = -88.56.

Then, divide both sides of the equation by the coefficient of variable. So, x = -88.56 / -14.76./

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5 0
2 years ago
What is the measure of AC 58 Degrees PLEASE HELP
Ann [662]
AC would be double of its angle, which happens to be 58.

58•2 = 116.

Therefore, your answer would be D: 116 degrees.
8 0
3 years ago
Read 2 more answers
Valarie used a laser to measure the average thickness of a human hair which is 0.0032 meters thick. A grain of sand is 0.0024 me
Liono4ka [1.6K]

Answer:

A human hair is 0.0008 meters thicker.

i think....

Step-by-step explanation:

7 0
3 years ago
Which of the following is equivalent to 7.4 kilograms? 740,000 mg 740 g 74 hg 74,000 cg
dlinn [17]
<span>Which of the following is 7.4 kilograms?
=> 740 000 mg
=> 740 g
=> 74 hg
=> 74 000 cg
Let’s base on the Unit of measurement or conversion.
=> 740 000 mg
In every 1 kilogram is equals to 1 000 000
=> 7.4 kg * 1 000 000 mg = 7 400 000 mg
It’s not the correct Answer
=> 740 g
In every 1 kg is equals to 1 000 grams
=> 7.4 * 1000 = 7 400 grams
Thus, it’s not the correct answer
=> 74 hg
In every 1kg is equals to 10 hectograms
=> 7.4 kg x 10 = 74hg
Thus, this is the correct answer
=> 74 000 cg
In every 1kg is equals to 100 000
=> 7.4 * 100 000 = 740 000
not the correct answer.

</span>



8 0
3 years ago
Read 2 more answers
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