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Published byEli Gossage Modified over 3 years ago

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Review 1-1 – 1-6

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Give expression with numbers substituted then evaluate: a = ⅔b = -3c =5 1.ab – 8c 2. a 2 - bc (⅔)(-3) – 8(5) = -42 (⅔) 2 – (-3)(5) = 15 4/9

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Give the property: 3. 16 +x = x+16 ______________ 4. 7 +0=7 ______________ 5. 3(x-4) = 3x-12 ______________ 6. 8+(-8) = 0 ______________ Commutative Identity Distributive Inverse

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7. Simplify:5(4x-2) - 2(x+8) Solve: 8. 8x – 10 = 18 – 4x 9. ⅛x – 4 = x + 10 20x-10-2x-16 18x-26 +4x +4x 12x-10=18 12x=28 x=2 ⅓ ( )8 x-32 = 8x+80 -8x -8x -7x-32 = 80 +32 +32 -7x = 112 -7 -7 x=-16

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10. If you bought 5 snowballs for 8.95. Regular snowballs costs $1.55 and a snowball with extra toppings costs $2.15. How many of each did you buy? 1.55x + 2.15(5-x) = 8.95 1.55x+10.75 – 2.15x = 8.95 -.6x = -1.8 x = 3 3 regular and 2 extra topping

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Solve and sketch the inequalities 11. 6x - 4 > 8 12. 3(x-4) -21 13. 8<3x-1<11 +4 +4 6x>12 x>2 3x-12 -21 +12 +12 3x -9 x -3 +1 +1 +1 9<3x<12 3 3 3 3

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14. You must keep your climate controlled storage room between 15ºC and 30ºC in order to keep your clients. Write the themperature in fahrenheit.

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15. If the Area of a trapezoid is 54in and the bases measure 8in and 10in, find the height. A = ½h(b 1 + b 2 ) 54 = ½h(8+10) 108 = h(18) Height is 6 inches

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HOMEWORK Page 47 61-69 all

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