1. This must be greater than or equal to 0 (there can't be any negatives!) 8 - .5t ≥ 0. 8 ≥ .5t t ≤ 16 D.
2. 4(2x-1) = 2x + 35 8x - 4 = 2x + 35 6x = 39 x = 6.5 H.
3. c = .8(x-15) = .8x-12 A.
4. m = number of marble cupcakes s = number of strawberry shortcake cupcakes
6m + 8.5s = 391 m = 1/2s 6(.5s)+8.5s = 391 11.5s = 391 s = 34 m = 17 F.
5. B 6. Use substitution 2x + 3x = 10 5x = 10 x = 2
7. (sorry I'm not sure!)
8. G 9. L = number of balls B = number of bats L + B = 100 B = 100 - L 4.5L+20B = 822 4.5L + 20(100-L) = 822 4.5L -20L + 2000 = 822 1178 = 15.5L L = 76
