Describe two situations in which it would be helpful to compare or order positive and negative rational numbers.

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?