Donald has xxx twenty-dollar bills and 111 ten-dollar bill.
how much money does donald have?
write your answer as an expression.

Jonah runs 3/5 miles on sunday and 7/10 mile on monday. he uses the model to find that he can ran a total of 1 mile . what mistake does jonah make

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Hi, can anyone show me how to do this problem? 100 points for this. in advance