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Nana76 [90]
2 years ago
11

The price of fuel may increase due to demand and decrease due to overproduction. Emily is studying the change in the price of tw

o types of fuel, A and B, over time.
The price f(x), in dollars, of fuel A after x months is represented by the function below:
f(x) = 2.96(1.04)*
Part A: Is the price of fuel A Increasing or decreasing and by what percentage per month? Justify your answer. (5 points)
Part B: The table below shows the price g(m), in dollars, of fuel B after m months.
m (number of months) 1
2
3
4
g(m) (price in dollars) 3.04 3.22 3.41 3.61
Which type of fuel recorded a greater percentage change in price over the previous month? Justify your answer. (5 points)
Mathematics
1 answer:
Marizza181 [45]2 years ago
4 0

An exponential function can either represent a growth or decay.

  • The price of fuel A is increasing.
  • Fuel B recorded a greater percentage change in price

<u>Part A</u>

For fuel A, the exponential function is given as:

f(x) = 2.96(1.04)^x

An exponential function is represented as:

y = ab^x

Where b represents the rate.

By comparison

b = 1.04

Since b (i.e. 1.04) is greater than 1, then the price of fuel A is increasing.

<u>Part B</u>

The table represents an exponential function.

The rate of fuel B is calculated by dividing the current price by the immediate previous price.

So, we have:

b = \frac{3.41}{3.22}

b = 1.06

By comparison, 1.06 is greater than 1.04 (the rate of fuel A).

Hence, fuel B recorded a greater percentage change in price

Read more about exponential functions at:

brainly.com/question/11464095

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