X is between -6 and 11 and y between -6 and 8
Answer:
a. an = -1 • 4^(n - 1)
Step-by-step explanation:
It's easy see that each term is multiplied by 4 to get the next term, so the common ratio will be 4, that reduces the choices to answers A and B (since C and D use -1 as common ratio). Also, normally a geometric progression uses "n-1", so we'll first try with A to see if it works.
a1 = (-1) * 4^0 = -1 * 1 = -1
a2 = (-1) * 4^1 = -1 * 4 = -4
a3 = (-1) * 4^2 = -1 * 16 = -16
Yes, it works... so the answer is an = -1 • 4^(n - 1)
Sum = 2/8 + 3/8 = (2+3)/8 = 5/8 pounds
Difference = 3/8 - 2/8 = (3-2)/8 = 1/8 pounds
13.20 because that is the discount received.
Answer:
Step-by-step explanation:
I would help, but I get some of it, but not all of it.
