There are 45 numbers between 49 and 95
Numbers in the fifties: 50,51,52,53,54,55,56,57,58,59
Numbers in the sixties: 60,61,62,63,64,65,66,67,68,69
Numbers in their seventies: 70,71,72,73,74,75,76,77,78,79
Numbers in their eighties: 80,81,82,83,84,85,86,87,88,89
Numbers in their nineties: 90,91,92,93,94
Multiples of 2:
50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94
Multiples of 3:
51,54,57,60,63,66,69,72,75,78,81,84,87,90
Multiples of 9:
54,63,72,81,90
Notice that all multiples of nine are also multiples of three? That is because three is a factor of nine
we have been asked to find the sum of the series

As we know that a geometric series has a constant ratio "r" and it is defined as

The first term of the series is 
Geometric series sum formula is

Plugin the values we get

On simplification we get

Hence the sum of the given series is
Answer: y=-1/5x+4
Step-by-step explanation: use the equation y=mx+b (x,y)->(5,3) 5 is an x value and 3 is a y value so you want to plug in these values into the equation. 3=-1/5(5)+b. We already know our slope so just plug it into m. Now multiply -1/5 and 5 which is -1. 3=-1+b you want to isolate b so you can find the intercept. Add one to both sides so it cancels out. 4=b we found our y-intercept so we can write the equation now. y=-1/5x+4