Which of the following quadratic equations have two real solutions? Select all that apply.
(Select all that apply.)
3x² + 5x + 10 = 0
10x? – 10 = 0
✓ - 4x² + 5x = -7
✓ x2 + 15x + 2 = 0
9x² + 5x = 0
2x2 + 12 = – 9x

Part A: Geometric Sequence

Part B:

Part C: a₈ = 512

Step-by-step explanation:

When we find the common ratio between the y-values (x-values are n inputs), we should see that we get r = 2. That means we have a geometric sequence.

Because we have a geometric sequence, our recursive formula is: . Simply plug in our known variables:

Now we need to find what y is when x = 8, so (I used explicit formula):

a₈ = 512