Stage B would be 70km since 5/7 is stage B and 5 x 14 = 70
If 3 squared is 9 then 9 times -2 is -18 plus 7 is -11
If the decimal is in the tenths then the denominator would be like 10. Ex: Decimal: 0.2 Fraction- 2/10. and the same with hundredths, thousandths, etc.

. Subtract 10x from both sides.

. Divide by 5 on both sides. x=20. So you would need to buy 20 movies.