If a function rule is 2x – 3, what is the output for the input 3?

Mathematics

2 answers:

anzhelika [568]3 years ago

6 0

Answer:

The function rule can be written as: f(x) = 2x-3

So, when we input 3, we replace all of the x's for 3's and have: f(3) = 2(3)-3.

This simplifies to be: f(3) = 3, meaning that 3 is the output.

Hope this helps!

Alenkasestr [34]3 years ago

6 0

Answer:3

Step-by-step explanation:

The output value is y so set an equation at y=2x-3. Now x is the input value so plug in 3 for x. Two times three is 6 and then you have to subtract three from that. So the output value for an input of 3 is 3.

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3 3/4 + 5/12<br>help me plz lol

m_a_m_a [10]

Answer:

4 $\frac{1}{6}$

Step-by-step explanation:

When adding fractions, you want to make the denominators of the fraction the same. To do this, we can multiply both the numerator and denominator of 3/4 by 3. When changing either a denominator or numerator in a fraction, you must do the same thing to the numerator as the denominator.

Now we have $\frac{3\cdot3}{4\cdot3} = \frac{9}{12}$ . To add 9/12 and 5/12, we keep the denominator the same, and add the numerators, getting $\frac{9+5}{12} =\frac{14}{12}$ . This is greater than 1, so we can take 12/12 from 14/12, and make it $1 \frac{2}{12}$ . If we then add 3, we get $4 \frac{2}{12}$ , which simplifies to $4 \frac{1}{6}$