Hey, im confused on this math problem.. / ab= ? / whats that supposed to mean? a and b equal nothing..

Mr switzer needs to buy new 1-foot tiles to cover his bathroom floor. the floor is 12 feet long and 8 feet wide. each square foot of tile will cost $1.79. in dollars what will be the total cost of the tiles he needs to buy.

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

Astore sells 4 apples for $3 and 3 oranges for $4 if pete buys 12 apples and 12 oranges how much will it cost