Which expression represents 75 divided by an unknown number? a. 75 – r b. 75 · r c. 75 ÷ r d. 75 + r
corey added stickers to his party invitations. he put the same number of stickers on 7 invitations.
which expression shows the number of stickers corey put on each invitation?
let the variable s stand for the number of stickers corey started with.
a. s /7
b.7s
c. s+7
d. s-7
abby scored 30 fewer points in the game than charles scored. abby scored 170 points in the game.
which equation can be used to calculate how many points charles scored in the game?
let the variable p stand for the number of points that charles scored.
a.30-p=170
b.170=p-30
c.170=p+30
d.170-30=p
gretchen worked in the ticket booth for 20 minutes. kevin worked in the ticket booth 5 times longer than gretchen.
which equation could be used to calculate the number of minutes that kevin worked?
let the variable b stand for the number of minutes kevin worked.
a.20=b+5
b.20=b*5
c. b=20/5
d. b=5*20