Name the property that justifies going from the first statement to the second statement.
5x = 35
x=7
O Division Property
O Distributive Property
Reflexive Property
O Multiplication Property
O Symmetric Property of Congruence

How to do this , and can some one explain

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.