Jody has already hiked 4 kilometers. the trail is 12 kilometers long. she can hike 2.5 per hour. which function will jody figure out how many more hours, h, she needs to hike?

2.5h + 4 = 12 <== ur equation
2.5h = 12 - 4
2.5h = 8
h = 8 / 2.5
h = 3.2 hrs

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