Here are the answers: 1. 4n + 5 2. 200 3. 1 pound of apples = $3, 1 pound of berries = $8, 1 pound of cherries = $5 4. x = 5, 13 5. 17/cos(50) = 26.447 6. x = -2 7. Jake is 24 years old and Jan is 48 years old. 8. x^3 + x^2 - 16x - 16 = 0 x^2(x + 1) - 16(x + 1) = 0 (x^2 - 16)(x+1) = 0 x = +/- 4, and -1 This can also be solved using Long Division and then factorisation. 9. x = 24 10. x = 1, y = 2.5