Susan needs to buy apples and oranges to make fruit salad. she needs 15 fruits in all. apples cost $3 per piece, and oranges cost $2 per piece. let m represent the number of apples. identify an expression that represents the amount susan spent on the fruits. then identify the amount she spent if she bought 6 apples.
30 + 5m; $36
30 + m; $36
30 + 5m; $24
30 + m; $24