- 3. ( u + r )3 let u = 6, r = 4
- 4. abc2 let a = 2, b = 4, c = 3
- 5. 3y + 5d + (2n + y2) let n=20, y=8, d=15
- 6. 2n3 + 15b let n = 3, b = 4
- 7. ( 6x - 12)2 + 7e let x = 5, e = 8
- 9. 6w + z2 - 3z let w = 15, z = 10
- 10. 11v - 72/g let v = 9, g = 12
- 11. The sum of 13 and a number is 48
A) 13 + x = 48
B) 13 - x = 48
C) 13x = 48
D) 13x=48
- 12. The quotient of a number and 10 is 180
A) x/10 = 180
B) x + 10 = 180
C) x - 10 = 180
D) 10x = 180
- 13. A number cubed plus 15 is 90
A) x2 + 15 = 90
B) 2x + 15 = 90
C) x3 + 15 = 90
D) (x + 15)3 = 90
- 14. 25 less than twice a number is 139
A) 2x - 25 = 139
B) x2 - 25 = 130
C) 25 - x2 = 130
D) 25 - 2x = 139
- 15. The difference in 250 and a number squared is 400
A) 2x - 250 = 400
B) x2 - 250 = 400
C) 250 - 2x = 400
D) 250 - x2 = 400
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