$225 for 25 books would be how much per book?

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

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.

How many and of which kind of roots does the equation f(x)=x3−x2−x+1