Saffron is a very expensive spice.
A shop is selling saffron for $7.35 per gram.
(a) Draw a graph showing the cost of up to 5 grams.
(b) Write a formula for the cost (y), in dollars, of g grams of saffron.
(c) Use the formula to find:
(i) the cost of 3.4 grams
(ii) the number of grams you can buy for $20.