Solve these problems with x = -3 and y = 2 1. 3x + 2
2. 1/2 y - 1
3. 2x + 8y
30 POINTS

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?