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strojnjashka [21]
3 years ago
13

Given f(x)=5x+15 find f(x)=30

Mathematics
1 answer:
Schach [20]3 years ago
3 0
Given the function, f(x) = 5x + 15:

In order to find the value of x when f(x) = 30, substitute the value of the output into the function:

f(x) = 5x + 15
30 = 5x + 15

Subtract 15 from both sides:
30 - 15 = 5x + 15 - 15

15 = 5x

Divide both sides by 5:
15/5 = 5x/5

x = 3

Therefore, the value of x when f(x) = 30 is 3, or f(3) = 30.
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Answer:

Difference between high and low temperatures: 12°F

Average change in temperature per hour: 2°F

Step-by-step explanation:

The difference between high and low temperatures was: 7 - (-5) = 12 (°F)

Midnight is 12am, so 6pm to midnight is 6 hours.

The average change in temperature per hour is: 12 / 6 = 2 (°F)

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4 years ago
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A survey of teens suggested that 33% can name at least one professional baseball player, and 90% of those teens can also name at
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Step-by-step explanation:

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Required

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