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svp [43]
3 years ago
11

What is f(x)=2x^2+3x+7 is x=-5

Mathematics
1 answer:
Mice21 [21]3 years ago
4 0
F(-5) = 2(-5)² + 3(-5) + 7
f(-5) = 2(25) - 15 + 7
f(-5) = 50 - 8
f(-5) = 42
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1. The manager of FrozonAir Refrigerator factory notices that on Monday it cost the company a total of $25,000 to build 30 refri
Vinvika [58]

Answer:

The fixed costs per day for the factory is $10,000 and marginal cost of one refrigerator for $500

Step-by-step explanation:

Let

Cost per refrigerator (marginal cost) = r

Fixed costs per day for the factory = f

Total cost = variable cost + fixed cost

Monday

25,000 = 30r + f

Tuesday

30,000 = 40r + f

Using Monday,

f = 25000 -30r

Substitute f = 25000 - 30r into Tuesday

30,000 = 40r + f

30,000 = 40r + (25,000 -30r)

30,000 = 40r + 25,000 - 30r

Collect like terms

30,000 - 25,000 = 40r - 30r

5,000 = 10r

Divide both sides by 10

r = 5,000 / 10

= 500

r = $500

Substitute r= 500 into Monday equation

f = 25,000 -30r

= 25,000 - 30(500)

= 25,000 - 15,000

= 10,000

f = $10,000

Therefore, the fixed costs per day for the factory is $10,000 and marginal cost of one refrigerator for $500

7 0
3 years ago
​2+(y​5x)
zimovet [89]

.............................

7 0
2 years ago
What are the constants in the expression 7r - 3 + 2s + 5
slega [8]
B. -3 and 5

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6 0
3 years ago
PLEASE HELP ME ASAP!!!!!!
Arada [10]

Answer:

$6.30 each bottle

Step-by-step explanation:

What you do is you take $4.50 and times it by .40

<em>4.50 x .40 = 1.80</em>

<em>1.80 + 4.50 = 6.30</em>

$6.30 each bottle

8 0
3 years ago
Jocelyn got 19 correct answers out of 25 questions on her last test . what percent of the questions did she answer correctly
aleksandrvk [35]
19 ÷ 25= 0.76

0.76 ⇒ 76%
She got a C on the test.

Hoped this helped.

~Bob Ross®
4 0
2 years ago
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