Please solve #1 and #2 I will mark your brain list if you explain how you got your answer.

What is the distance between the points 4,10 and -3,-14 on the coordinate plane

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.

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?