3. -17 * 3 = -51
6. 117/ -1 = -117
9. 63/ -21 = -3
12. (-3) * {7 * -2)} = -3 * -14 = 42
15. -15 * -3/ -9 = -45/-9 = 5
Hope this helps
Answer:
Step-by-step explanation:
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If Jan bought 3 lamps for $23.59 each, and a sofa for $769.99, then we can add these prices together for the total amount Jan spent:
23.59 + 23.59 + 23.59 + <span>769.99 = $840.76
</span>
Now we can find out how much sales tax she owes by multiplying the total cost by the sales tax rate:
$840.76 x 7.5% = <span>840.76 x 0.075 = $63.06
</span>
Therefore the answer is B. $63.06
<h2>y2-y1/x2-x1 </h2><h3>this is the formula </h3>
X³ + 2x² - x - 2 < 0
x³ - x + 2x² - 2 < 0
x(x² - 1) - 2(x² - 1) < 0
(x - 2)(x² - 1) < 0
(x - 2)(x - 1)(x + 1) < 0
by chacking we get the solution
x ∈ (-∞,-1) ∪ (-1,1)