A model rocket is launched with an initial upward velocity of 175 ft/s. The rockets height h (in feet) after t seconds is given by the following H=175t-16t^2
Find all values of t which the rockets height is 85 feet.

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?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

The pair of coordinates that do not represent the point( 5,150’) is a. (5,-210) b. (5,210) c. (-5,330) d. (-5,-30)