What volume of concrete is required to build this footbridge

Answer! if you don’t mind, can you explain

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265

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?