Carman spent 42$ on 6 hats how much did each hat cost. its for my sisters elementary school class and i dont even know the awnser because she hasnt learned division

For what value of (y) is 3^3/3^y =1/9

Which of the following is the result of expanding the series

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?