How can you use function notation to evaluate a function with a given equation?

1 answer:

3 0

Find f (3) when f (x) =2x is the same as finding u when x= 3 ,for y=2x

to evaluate a function substitute the input (the given number or expression ) for the functions variable(place holder x). Replace the x with the number or expression

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7 more than the product of a number and 4 is 51 what is the number? A.4 B.5 C.13 or D.11

Rasek [7]

I would say 13 would be your answer. Hope this helps!

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3 years ago

Factor.<br> 28 - 4u<br> I don’t know how to factor 28-4u so if anyone can help thank you

Sedaia [141]

Answer: 4(7-u)

Step-by-step explanation:

In order to factor, you have to find the GCF (Greatest Common Factor)

28:1, 28, 2, 14, 4, 7

4:1, 4, 2

The greatest common factor here is 4.

You can factor out 4 from this equation, therefore making it 4(7-u)

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2 years ago

What is the height of the trapezoid?

Nataly [62]

I am pretty sure the height is 4, but sorry if i am wrong

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3 years ago

Read 2 more answers

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ch4aika [34]

Of 400 votes cast, olivia received 38% of the votes and michael received 116 votes. what percentage

6 0

3 years ago

Erin gets her exercise by running. The graph shows the distances she covers in a given amount of time. How many hours does it ta

soldi70 [24.7K]

The correct answer is c. 2 $\frac{1}{2}$ hours

Explanation:

The graphic shows the relationship between the distance Erin covers by running and the time this requires. Additionally, to know the specific time that takes for Erin to run a specific distance or vice versa it is necessary to observe at which point the two variables intersect in the line of the graph.

According to this, Erin runs 25 miles (y-axis) in 2.5 hours (x-axis), which you can know because in the line shown by the graph the distance 25 miles that is in the middle of 20 and 30 miles intersects with 2.5 hours or the middle between 2 and 3. Additionally, this number can be expressed as 2 and a half hours, 2.5 or even 2 $\frac{1}{2}$ hours because the fraction represents half. This makes option C the answer.

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3 years ago