Abacteria population increases every hour. at 12 p. m., there are 5 cells. at 1 p. m., there are 10 cells. at 2 p. m., there are 20 cells. at 3 p. m., there are 40 cells. if this pattern continues, how many cells will there be at 7 p. m.? explain. me quickly

Ineed to learn how to solve this problem

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 ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total