Question

In one store, bananas cost 60 cents per pound. The cost, in dollars, of x pounds of bananas is 0.6x. What is the cost of 2.50 pounds of bananas?

Answer 1

`\bf \stackrel{\textit{total cost}}{f(x)}=\stackrel{\textit{bananas lbs}}{0.6\stackrel{\downarrow }{x}}~\hfill \stackrel{\textit{for 2.50 lbs }x = 2.5}{f(2.5)=0.6(2.5)}\implies f(2.5)=1.5`