It costs $4 to go to the swimming pool. a membership at the pool costs $21. members pay $3 to use the pool each time. write an algebraic expression for the cost for a member to swim, including the cost of a membership.

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.

Kerion has a beaded necklace business. she can make 12 necklaces is 2 hours. how long will it take her to make 9 necklaces?

Which of the following vectors are orthogonal to (2,1)? check all that apply