urgenta third-grade class has 12 girls and 13 boys. a fourth-grade class has 10 boys and 11 girls. when picking teams for pe, one captain will make a selection from the fourth-grade class, then the other captain will make a selection from the fourth-grade class. after that, the first captain will make a selection from the third-grade class, and the second captain will do likewise. assuming everyone has an equally likely chance of being selected, what is the probability that the first captain will pick two girls before picking any boys?

a.

44/175

b.

117/143

c.

120/143

d.

133/143

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

What number is 7 units left of -15?

Time (minutes) amount of water (gallons) practice 1. jin fills up a 510-gallon pool in the backyard for her children. she fills it with the garden hose at a rate of 17 gallons per minute. after it is filled, she lets it sit for 30 minutes in order to let the water temperature rise. the children then get in and have fun for an hour. the pool loses about 5 gallon of water each minute due to their splashing and playing. at the end of the hour, they tear the pool while getting out, which causes a leak the pool then begins to lose water at a rate of 2 gallons per minute. a. complete the table to show the amount of water in the pool after each minute. b. create a graph to model the problem situation. include when the pool will be empty. c. write a piecewise function that models this problem situation. explain your reasoning for each piece of the function. d. identify the x- and y-intercept. explain what they mean in terms of the problem situation, atamantha a cul 80 100 120 150 200 ning, inc