Please help Lazlo throws a ball that moves according to the function:
h(t) = -4.9+2 + 40t + 1.5, where h(t) is the height in metres and t is the time in seconds.
a) For how long is the ball in the air?
b) How high does the ball go?
c) How long does it take for the ball to reach its maximum height?
d) At what time(s) does the ball reach a height of 10 m?
e) At what time does the ball reach a height of 90 m?
[Application = 3+3 + 2 + 3 + 2 = 13]

Muscles, a membership-only gym is hoping to open a new branch in a small city in pennsylvania that currently has no fitness centers. according to their research approximately 12,600 residents live within driving distance of the gym. muscles sends out surveys to a sample of 300 randomly selected residents in this area (all of who respond) and finds that 40 residents say they would visit a gym if one was located in their area. based on the past survey research, muscles estimates that approximately 30% of these respondents would actually join the gym if they opened one in the area. based on this information and the results of the sample survey, about how many residents should muscles expect to join its new branch? a) 134 b) 504 c) 1,680 d) 3,780

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?