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4 years ago

Evaluate 4x3 + 2 for x = -1. -62 -10 -6 -2

1 answer:

7 0

If 'x' = -1

Your problem becomes 4(-1)3 + 2

-4(3) = -12
-12 + 2 = -10

Your answer would have to be: -10 (option B.)

⚠Just Do ⚠

P- Parentheses
E- Equation
M- Multiplication
D- Division
A- Addition
S-subtraction

Good Luck

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Solve by completing the square: x2 − 12x + 11 = 0 a 11 & 1 b -11 and -1 c 11 and -1 d -11 and 1 e none of the above

Andrews [41]

A (11 and 1) I did it in 2ways (sum and product, discriminant)

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3 years ago

How do I solve -2x > 6

vodomira [7]

I’m not the best with words but first you would have to treat the greater sign as a = sign. So..
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4 years ago

The charges for an international call made using the calling card for two phone companies are shown in the table. a. What is the

dlinn [17]

Answer: 10 minutes

Step-by-step explanation:

Let x be minutes.

Toatl costs for a call are:

A: 35 + 3x

B: 45 + 2x

When will A = B?

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3 years ago

A store has been selling 300 DVD burners sold per week at 350 each. A market survey indicates that for each $ 30 rebate offered

Nana76 [90]

Answer:

3 times rebate will maximize its revenue

Step-by-step explanation:

Given that a store has been selling 300 DVD burners sold per week at 350 each

A market survey indicates that for each $ 30 rebate offered to buyers, the number of units sold will increase by 60 a week.

If x times rebate is offered then units sold would be 300+60x

Thus original revenue $= 300*350 = 105000$

After rebate of x times 30 dollars we have

New revenue

$R(x) = (300+60x)(350-30x)\\= 105000+12000x-1800x^2\\R'(x) = 12000-3600x\\\\R"(x) = -3600$

Equate first derivative to 0 to get

x= $\frac{12000}{3600} =3.333$

i.e. 3 times rebate will maximize its revenue

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3 years ago

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il63 [147K]

Answer:

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Step-by-step explanation:

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2 years ago