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nataly862011 [7]
1 year ago
15

Solve 8 = 2^x + 4. A. x=-4 B. x=-1 C. x=0 D. x=7

Mathematics
1 answer:
stira [4]1 year ago
8 0
I got x=2 , in just so confused non of them aren’t 2
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A bookstore costs $96 a day to keep open, and it spends $12 for each book that it sells. If each book sells for $18, what is the
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Answer: The break even point is when they have sold 16 books and have made $288

Step-by-step explanation:  The costs are modeled in the equation y = 12x + 96.  x is the number of books sold.

The earnings are modeled by he equation y = 18x.

Substitute 18x for y and solve for x.

18x = 12x + 96  Subtract 12x from both sides.

6x = 96 Divide both sides by 6

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Substitute into the original equations to solve  for y

y = 12(16) + 96

y = 192 + 96

Y = 288

y = 18(16)

y = 288

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3 years ago
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3 years ago
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-15x^2 +8x -1

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The slope of a line is – 3, and a point on the line is (4, -1).
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Given:
<span>mantle layer of earth begins about 70 kilometers underneath the surface
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Comparing -70 and -2970, -70 has a greater value than -2970. The nearer the number is to the origin or 0, the higher its value.

Comparing the absolute greater value of -70 and -2970, -2970 has a greater absolute value. This is because absolute value is the positive value of the number. Absolute value of -70 is 70 while absolute value of -2970 is 2970. Thus, -2970 has a greater absolute value. </span>
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