The function f(x)=4(2)^x represent the number of people who share a cat video x hours after it first appears on a website. How d
oes the number of people sharing the video change each hour? A.the number increases by 2 each hour.B. The number doubles each hour.C.the number increases by 4 each hour.D. The number increases by a factor of 4 each hour.
y = a(1+r)ˣ, where a is the initial value, r is the growth rate (as a percentage) and x is the number of time periods.
For our problem, the initial value is 4. Since 1+r = 2, this means r = 1; this means the value increases by 100% each time. This is the definition of doubling.
Correlation is what you're looking for. Basically, it means that the two numbers are somehow related. Some examples of correlation would be positive correlation, negative correlation, and no correlation.
