Bill exercised for 3 minutes and burned 14 calories. Then he exercised for an additional mminutes, burning calories at this same rate. If Bill burned a total of 210 calories, which of the following equations could be
used to determine the value of m?
14 + 3(14m) = 210
14 +
3
m =
210
14
• 4 (m-3) = 210
• 4 (m+3) = 210

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?