Answer:
this mean in case of multiplying exponents with same base you should add the exponent and keep base same.
example:

Jaime is correct,
because when you turn a decimal into percent, you move the decimal two places, you are basically multiplying by 100.<span />
Answer:
let,
x=ky
y=39 when x=7 so,
7=39k
or, k=7/39
now, when x=22
22=7y/39
or, y=39×22/7
or, y=858/7
or, y=122.57 (rounded to the nearest hundredth)