Lewis wants to play several games of paintball with his friends. at the park, it costs $12.49 for admission and paintballs, and $6.21 for each game he plays. which of the following equations could be used to determine lewis's total cost for several games of paintball?

(let x represent the number of games lewis plays and y represent his total cost.)

a. y = $12.49x + $6.21
b. y = $6.21x + $12.49
c. y = $6.21x
d. $12.49y = $6.21x

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.

Astudent is determining the influence of different types of food on the growth rate of spiders. she feeds one group of spiders two caterpillars twice a week. the other group received similarly-sized beetles twice a week. she records the amount of time required for individuals to reach sexual maturity. her hypothesis is that the spiders feeding on caterpillars will have a faster growth rate because caterpillars have a higher protein content compared to beetles. in this experiment, what is the dependent variable? spiders assigned to different feeding groups. time required to reach sexual maturity number of prey items fed twice a week. growth rates of each group.