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
You could do that (
yes), but in many cases, you would need to determine equivalence some other way (
no) before plotting the numbers on a number line.
If the number line is graduated in a manner that makes 1/2 clear, and also makes 4/8 clear, then it is possible to determine that both values lie at the same point. If the number line is graduated in tenths or hundredths (for example), you would need to convert both numbers to that format before plotting.
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Step-by-step explanation:
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Answer:
(x + 5)2 + 2 = 42.5
List of steps
2(x)+2(5)
2x+10
2x+10+2=42.5
2x+12=42.5
2x=42.5-12
2x=30.5
2x/2=30.5/2
x=30.5/2
x=15.25
x=15.25
Step-by-step explanation:
(x + 5)2 + 2 = 42.5
Solve (x+5)2 first
2(x)+2(5)
2x+10
Now the equation
2x+10+2=42.5
2x+12=42.5
Make 2x the subject
2x=42.5-12
2x=30.5
Divide both sides of the equation by 2
2x/2=30.5/2
x=30.5/2
x=15.25