H(t) = -16t^2+150 After how many seconds, rounded to the nearest hundredth, did the ball hit the ground?
Hint around 3

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi