If an expression is shown as 5(x+2) the numbers inside the parenthesis must both be multiplied by the number outside. Only x was multiple. The correct rewritten expression would be 5x+10
2 to the fifth power over 3 squared all raised to the fourth power

Answer: 2 to the twentieth power over 3 to the eighth power
Used:

24 divided by 80= 0.3
24/30 there were 30 questions on the test and he got 24 right