A clothing store is selling a pair of jeans for $18 and a sweatshirt for $12. Which inequality shows the number of sweatshirts Alee can buy along with a pair of jeans if she had $90 to spend? Assume that there is no sales tax

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

Aremote-controlled boat can travel at 4 feet per second in calm water. the boat traveled 48 feet with the current, and then it traveled 16 feet against the current in the same amount of time. how fast is the current?