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Ira Lisetskai [31]
2 years ago
7

Evaluate the function: f(x)=x2−4x, find f(−3)

Mathematics
1 answer:
VikaD [51]2 years ago
3 0

Answer:

f(-3) = 21

Step-by-step explanation:

To solve this, you can replace all x's with -3 and then solve to find the answer.

f(x) = x^2 - 4x

f(-3) = -3^2 - 4(-3)

f(-3) = 9 - (-12)

f(-3) = 21

I hope this helps!

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Jefferson Middle School needs to see a 300% gain in PTO fundraiser
Ronch [10]

Given parameters:

Percentage gain = 300%

Selling cost last year = $2420

Unknown:

Selling cost this year  = ?

Solution:

To solve this problem;

     Profit percent  = \frac{Selling cost this year - Selling cost last year}{Selling cost last year} x 100

      300 = \frac{S - 2420}{2420}  x 100

      3 = \frac{S - 2420}{2420}

         S- 2420 = 7260

          S = $9680

To make a 300% gain, Jefferson Middle school needs a $9680 from fundraiser sales this year.

6 0
3 years ago
A 2-liter bottle is filed completely with water from a faucet in 10seconds. How much water is filled into the bottle each second
andreev551 [17]
In 10 seconds, in fills = 2 L
so, in 1 sec, it will fill = 2/10 L = 1/5 L = 0.2 L or 200 mL

In short, Your Answer would be 0.2 Liter or 200 milliliter

Hope this helps!
4 0
3 years ago
Read 2 more answers
What is 1/8 - 7/8 ? ( its a fraction)
kap26 [50]

Answer:

1/8-7/8= -3/4

Step-by-step explanation:

1/8-7/8 is just like 7/8-1/8 but is the opposite

7/8-1/8=6/8 or 3/4

1/8+6/8=7/8

1/8-1/8=0

0-6/8= -6/8 or -3/4

4 0
3 years ago
Nine raised to the five-minus-two power?
bonufazy [111]

Answer:

1. 9 raised to the third power is 729

2. 4 raised the the power of 1 is 1

Step-by-step explanation:

9*9= 81*9=729

4*1=4

8 0
3 years ago
Which expression has the least value?<br> A. 3(33)<br> B. 0 31-33)<br> C. 0-31-33)<br> D. 3(3-3)
Deffense [45]

Answer:

I think it is C but can't be sure because B isn't clear.

Step-by-step explanation:

4 0
3 years ago
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