Mr. James bought x lunchboxes for his staff. He paid $6.25, including tax, per lunchbox. He gave the cashier $398.26 and received $10.76 in change. How many staff members does Mr. James have?

Pls! does anybody know a shortcut for answering these types of questions in the future?

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

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.