Jim buys his school supplies in bulk. on one particular shopping trip he bought 5 red pens at $1.29 each, 3 blue pens at $1.49 each, 6 green pens at $1.79 each and 9 black pens at $0.99 each. what was the average cost of a pen? round to the nearest cent.

(1.49+1.29+1.79+0.99)/5+3+6+9= 19.112
Rounding to the nearest cent = 19.11

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8