What is the sum of the series?
∑k=13(5k2−1)
Enter your answer in the box.

do you mean add both of the equations together

because if you do the answer is 10x-5

step-by-step explanation:

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.

only 10/60 isn't equivalent

hope this : )