Do you mean 5+7?
If so, that equals 12!
Answer:

Step-by-step explanation:
In this problem we have a exponential equation of the form

where
y is the population of the city
x is the number of years
a is the initial value or y-intercept
b is the base
r is the rate of growth
b=(1+r)
we have

substitute

For x=17 years
substitute the value of x in the exponential equation and solve for y


Answer:
About 4 should be below
Step-by-step explanation: