The function for the amount saved if they purchase a used drone rather than a new drone from Jim's store is f(x) = 0.45x
He sells used drones at 70% of the price (x).
So, the selling price of a used drone is:
Express percentage as decimal
Also, he sells new drones at 15% more of the price (x).
So, the selling price of a new drone is:
Express percentage as decimal
The amount saved is the difference between the prices of the drones.
So, we have:
This gives
Subtract
Express as a function
Hence, the function for the amount saved is f(x) = 0.45x
Read more about proportions at:
brainly.com/question/13114933
Answer:
Step-by-step explanation:
We just need to evaluate the function at -2.
The function is:
Therefore, g(-2) will be:
I hope it helps you!
Answer:
x = 16
Step-by-step explanation:
The sum of the angles of a triangle are 180
128+ 2x-3 +23 = 180
Combine like terms
2x+148=180
Subtract 148 from each side
2x+148 -148 = 180-148
2x = 32
Divide by 2
2x/2 = 32/2
x =16
The sum of the digits of a two-digit number is 11. when the digits are reversed, the number increases by 27. find the original number.
Answer:
5
Step-by-step explanation:
The formula for Standard Error =
Standard deviation /√n
Where
n = Random number of samples
From the above question,
Standard deviation = 10
n = 4
Hence, Standard Error is calculated as:
= 10/√4
= 10/2
= 5
Therefore, the Standard error = 5
