Marie sells magazine subscriptions. she earns $15 a week plus $3 for each subscription she sells. how many subscriptions must she sell to earn $90 in one week? a 30 subscriptions b 40 subscriptions c 25 d 100

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?