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SVEN [57.7K]
2 years ago
7

If f(x) = 2x + 3, what is f(–2)

Mathematics
2 answers:
Lelechka [254]2 years ago
7 0

Answer

see explanation: x=-2=-7

Alona [7]2 years ago
6 0

Answer:

-1

Step-by-step explanation:

f(x) = 2x + 3

=2(-2) + 3

= -4 + 3

= -1

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3 0
3 years ago
A profit formula for dining plates from the previous year was modeled by the function P(d) = –15d2 + 1,200d – 2,000. The manufac
dem82 [27]

Answer:

P(d)=-33.75d^2+1800d-2000

Step-by-step explanation:

The profit function is:

P(d) = -15d^2+1,200d-2,000

Where

P is the profit

and

d is the number of units sold

Now, there is a 50% increase in number of units sold, so d will become:

50% = 50/100 = 0.5

d + 0.5d = 1.5d

So, we have to replace "d" with "1.5d" in the function, which makes it:

P(d) = -15d^2+1,200d-2,000\\P(d) = -15(1.5d)^2+1,200(1.5d)-2,000\\P(d)=-15(33.75)d^2+1800d-2000\\P(d)=-33.75d^2+1800d-2000

From the equations shown, last answer choice is correct.

P(d)=-33.75d^2+1800d-2000

7 0
4 years ago
Some investments in the stock market have earned 10% annually. At this rate, earning can be found using the formula A=p(1.10)n,
GalinKa [24]

Answer:

<em>c. 13.899.79</em>

Step-by-step explanation:

<u>Exponential function </u>

Two variables y and x have an exponential relation if  

y=Ce^{kx}

where C and k are real numbers. Many natural phenomena are modeled by using exponentials, finance included, where the growing of the investments can be computed through the use of the exponential function

The situation described in the question is modeled as

A=p1.1^{n}

being A is the total value of the investment, p is the initial value of the investment, and n is the number of years the money is invested. We know p=2,500 and n=18, so we compute A

A=(2,500)1.1^{18}

A=$13,899.79

Answer: c. 13.899.79

5 0
4 years ago
What number is 75% of 300
Readme [11.4K]
----------------------------------------------
Change percentage to decimal
----------------------------------------------
75% = 0.75

----------------------------------------------
Find percentage
----------------------------------------------
75% of 300 = 0.75 x 300
75% of 300 = 225

----------------------------------------------
Answer: 225
---------------------------------------------- 

8 0
3 years ago
What transformation did Sunita perform to create L′M′N′Q′?
Crank

Answer:

Sunita performed a transformation on trapezoid LMNQ to create L'M'N'Q', as shown in the figure.

Step-by-step explanation:

5 0
2 years ago
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