Find the equasion of the straight line passes thorugh point a and b a(1,7) b(-3,-1)

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out

What is the value of the product (3-2i)(3+2i)?