A toy manufacturer produces a set of blocks, with edge b, that can be used by children to build play structures. The production team is analyzing the amount of paint they need for a block. The production team decides to use one coat of paint for each block. Write an expression representing the minimum amount of paint needed for one block with edge b.

The production team decides one coat of paint is not enough, so they want to use two coats of paint for each block. Write an expression representing the minimum amount of paint needed for one block with edge b.

The production team purchases cans of paint that will cover 60 in2 . Write an inequality representing the maximum length of edge b, in inches, when the block is covered with the minimum amount of paint needed for two coats of paint.