Jim is 19
let fathers age be x then mothers age = x - 5 and Jim's age is (x - 5)
Total their ages and equate to 100
x + x - 5 + (x - 5 ) = 100
multiply through by 2 to eliminate the fraction
2x + 2x - 10 + x - 5 = 200
5x - 15 = 200 ( add 15 to both sides )
5x = 215 ( divide both sides by 5 )
x = 43
father is 43 years, mother is 38 and Jim is 19
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Answer:
The growth factor b is 1.04
Step-by-step explanation:
we know that
In this problem we have a exponential function of the form
where
y ---> is the number of students enrolled at a college
x ----> the number of years
a is the initial value or y-intercept
b is the growth factor
b=(1+r)
r is the rate of change
we have
therefore
The exponential function is equal to