Jon had 45 dollars in his account. He made 7 dollars per hour at his job. At the end of the week he had 150
dollars in his account. How many hours did he work?

First, 150-45 because we already know he had 45 dollars so we are left with 105$ so next you do 105$ divided by 7$ which gives you 15 hours. The answer is 15 hrs :)

Dis the solution here

You must find the surface of the block therefore 98187 dived by 5628 = 583m squared