Firs month A
Second month 3A
Third month 3*3A = A (3^2)
Fourth month A(3^3)
Fith month A (3^4)
nth month A (3 ^ (n-1) )
That is an exponential model, because the variable (time, n) is the exponent of the formula.
The answer for this problem is X= -103
Any number that ends with 0 or 5 is divisible by 5. If it ends with any other numbers such as 1 2, 3, 4, ,6, 7, 8, 9 then it is not divisible by 5. If a number is divisible by it means that the number can be divided by 5.
5, 10, 15, 20, 25, 1234567890, 9876543210, etc. are going to be divisible by 5 because they end or a 0.
So, look through your given options. Which answer choice has a 0 or a 5 at the end of the number? That's your answer. :)
Hope that helped. (:
U would do 10+5 first then u would do 5+2 so 15+7 =22
