A social networking site has an estimate 5000 members. This number is expected to increase 80% each month. Which function and graph model the number of members in thousands over time in months?

y = 5(1.8)^x

Step-by-step explanation:

the formula for an exponential equation is y = a(b)^x

the a in this case is the starting number which is 5000

y = 5000(b)^x

the b is the percentage in decimal form

0.8 BUT it is an increase so we add 1

1.8

y = 5000(1.8)^x

because the graph is in thousands we can make 5000 into 5

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.

36

step-by-step explanation: