Need help with pre-cal please

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

The late fee for library books is $2.00 plus 15¢ each day for a book that is late. if maria’s fee for a late book was $3.20, write and solve a linear equation to find how many days late the book was.

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7