1) if n is the set of natural numbers that are factors of 20, choose the selection below that correctly shows this set in roster form
a) {2,4,5,10}
b) {2,4,6,8,10,12,14,16,18,20}
c) {1,2,3,4,5,6,7,8,9,10,11,12,13,14,1 5,16,17,18,19,20}
d) {1,2,4,5,10,20}

2) suppose u={1,2,3,4,5,6,7,8,9,10} is the universal set, and p={2,4,6,8,10}. what is p’?
a) {1,2,3,4,5,6,7,8,9,10}
b) {3,5,7,9}
c) {1,3,5,7,9}
d) {2,4,8}

3) starting from 130 feet away, a person on bicycle rides towards the check point and then passes it. the rider is traveling at a constant rate of 25 ft./s. the distance between the bicycle and the checkpoint is given by the equation d=|130-25t|. at what times is the bike 15 feet away from the checkpoint?
a) 4.6 sec and 9.2 sec
b) 2.9 sec and 5.8 sec
c) 4.6 sec and 5.8 sec
d) 2.9 sec and 3.3 sec

4) suppose p={0,1,2,3,4,5,6,7,8,9} and v={2,4,6,8,10,12,14,16,18,20}. what is p/v
a) {0,1,2,3,5,6,7,8,910,12,14,16,18,20 }
b) {0,1,3,5,7,9}
c) {10,12,14,16,18,20}
d) {2,4,6,8}

5) the candy store has two containers of hard candy. one container has cherry, blueberry, and raspberry. the second container has orange, lime, blueberry, and lemon. which set represent all flavors of candy in the containers
a) cherry, blueberry, blueberry, raspberry, orange, lime, lemon}
b) {cherry, blueberry, raspberry, orange, lime, lemon}
c) {blueberry}
d) {blueberry, raspberry}

6) of 350 male athletes at the high school, some play only basketball, some play only baseball, and some do both. if 250 of the males play basketball and 120 play both sports how many in the mail play baseball.
a) 100
b) 220
c) 130
d) 120