Helpplease on the thing where it says = inside it says tens or hundred Help

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

Formulate alisha has a number in mind. if she adds three to her number the result is less than five. use this information to write and solve an inequality about alisha's number. then graph the solution set.