X = 8.5 because 8.5 x 2 = 17 and 17 + 1 = 18
To find equivalent expressions,
distribute the first one and
factor the second one.
Ignore the decimal places and do 789x38 and you get 29982. Now all you have to do is put the decimal places back. Since 789 was 7.89 it had 2 decimal places and 38 had 1 you have to move 29982 three decimal places to the left making your final answer 29.982.
64/3=x/1
easy, just divide
64/3=21 and 1/3 calls per hour
