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Georgia [21]
3 years ago
10

If ƒ(n) = 3n 2 - 7, then ƒ(-2) equals _____.

Mathematics
1 answer:
Gnom [1K]3 years ago
5 0
F(n) = 3n² - 7

f(-2) = 3(-2)² - 7
f(-2) = 3(4) - 7
f(-2) = 12 - 7
f(-2) = 5
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Mrs. Durham purchases turkey from the deli counter for $3.25 per pound. She also purchases a loaf of bread from the bakery for$4
Dima020 [189]
3.25t+4.50=c should be the right answer
5 0
3 years ago
You paint 13 1 3 of a wall in 14 1 4 hour. At that rate, how long will it take you to paint one wall?
Lady bird [3.3K]

Find the rate at which you work, that is, the # of walls painted per hour:

13 1/3 walls          40/3

------------------  = ---------- wall per hour

14 1/4 hr              57/4

Keep 40/3 as it is; invert the divisor (57/4) and then multiply the result by 40/3:

40        4        160 wall

------ * ------  = --------------- = approx. 0.94 wall in one hour, or 160/171 wall / hr

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4 0
3 years ago
Read 2 more answers
Please help me : ]
blondinia [14]

Given point doesn't satisfy the inequality

Step-by-step explanation:

In order to check, if an inequality is satisfied by the point or not the point is put in the inequality

Given inequality is:

5x-2y+1>0

Putting the point (-2,-1) in the inequality

5(-2)-2(-1)+1>0\\-10+3+1>0\\-10+4>0\\-6>0

As -6 cannot be greater than zero,

So,

Given point doesn't satisfy the inequality

Keywords: Inequality, properties

Learn more about inequality at:

  • brainly.com/question/12884373
  • brainly.com/question/12896802

#LearnwithBrainly

7 0
3 years ago
Which is the graph of f(x) = -(x+3)(x + 1)?
QveST [7]

Happy Pride Month!

Answer:

Option B

Step-by-step explanation:

Use Desmos graphing calculator for these probloms and type your qustion on the left box

6 0
2 years ago
Read 2 more answers
The cost of a candy bar in a vending machine is $0.95. The cost of a bottle of water in the same machine is $1.25. Jamie has $25
Mrrafil [7]

Answer:

The answer is $16.45

Step-by-step explanation:First, you have to multiply $0.95 x 9 = $8.55

Then, you have to subtract $25.00-$8.55 = $16.45


Please mark this brainliest and I will be glad to help anytime


6 0
3 years ago
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