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yaroslaw [1]
3 years ago
7

If f(x) = 4x + 5, determine the value of f(−3) .

Mathematics
2 answers:
ziro4ka [17]3 years ago
8 0

Answer:

f(-3)= -7

Step-by-step explanation:

To solve this problem, we want to find out what f(x) or y is, when x is equal to -3.

f(x)=4x+5

Therefore, we can substitute -3 in for x.

f(-3)=4(-3)+5

Now, solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition and Subtraction

Multiply 4 and -3

f(-3)=-12+5

Add -12 and 5

f(-3)= -7

kipiarov [429]3 years ago
4 0

Answer:

F(x)= -7

Step-by-step explanation:

f(-3)=4(-3)+5

F(-3)=  - 12 + 5

F(x)= -7

Hope this helps

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Suppose a baby food company has determined that its total revenue R for its food is given by R = − x 3 + 39 x 2 + 945 x where R
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Answer:

35,000 units

Step-by-step explanation:

Total revenue is:

R = -x^3+39x^2+945x

The maximum revenue is attained at the production level for which the derivate of the revenue function is zero:

R = -x^3+39x^2+945x\\R'=0=-3x^2+78x+945\\x=\frac{-b\pm\sqrt{78^2-(4*(-3)*945)} }{-6}\\x_1=35\\x_2=-9

Since production cannot be negative, revenue will be at a maximum when x = 35, or when the production level is 35,000 units.

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3 years ago
China's population is 1.446 x 10 to the ninth power. Marshal islands population
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1.446 x 10 = 14.46
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3 years ago
What is the solution to the inequality in interval notation? |4x+6|≤14
alexandr1967 [171]

Answer: x>5

Step-by-step explanation: The Absolute Value term is |4x+6|

For the Negative case, we'll use -(4x+6)

For the Positive case, we'll use (4x+6)

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    Multiply

     -4x-6 = 14

    Rearrange and Add up

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    Divide both sides by 4

     -x = 5

    Multiply both sides by (-1)

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    Which is the solution for the Negative Case

(4x+6) = 14

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6 0
2 years ago
A clear file box shaped like a rectangular prism is modeled below. The shaded part represents one base of the box. A formula for
IRINA_888 [86]

Answer:

C. B = (19)(14)

Step-by-step explanation:

Given:

length (l) = 19 in.

width (w) = 14 in.

height (h) = 11 in.

Formula for volume of the rectangular prism = Bh

Base area (B) = l*w

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Formula for finding base area: B = (19)(14)

8 0
3 years ago
What is the quadratic formula?
Ne4ueva [31]

Answer:

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Step-by-step explanation:

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