Help with this o(╥﹏╥)o Find the sum of geometric sequence -3, 15, -75, 375,... when there are 8 terms and select the correct answer below.

-195,312

195,312

292,968

-292,968

Find the sum of 9-term geometric sequence when the first term is 4 and the last term is 1,024 and select the correct answer below.

682

2,044

2,048

678

Step-by-step explanation:

the 1st one is b

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation: