Afamily of two adults and three children went out to dinner the total bill was $42 each child center cost four dollars how much did each adult dinner cost

How many $20 bills do you need to have to make $280

Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.

Find the maximum value of p= 4x + 5y subject to the following constraints :