The frog population at a lake doubles every three weeks. the population can be modeled by f(x)=15(2)^x and f(6)=960. what does the 15 represent?
a- the population after six weeks
b- the starting population
c- the rate the population increases
d- the number of weeks that have passed

B- The starting population

Step-to-step-explanation:-

Given: The frog population at a lake doubles every three weeks. The population can be modeled by and

The given function is a exponential growth function in which the independent variable (x) appears in exponents and with constant multiplicative rate of change .

When we substitute x=0 in the given function, we get

Hence, 15 represents the starting population .

b. the carbon cycle ensures living things have a source of hydrogen