Use the table to write a linear function that relates y to x . PLEASE NO HACKERS

y=

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

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

Which expression gives the exact value of x?