PLEASE HELP ASAP WILL MARK BRAINLYIST SEE PICTURES
1 answer:
Answer:
Problem One: D
Problem Two: B
Step-by-step explanation:
Problem One
A and B are both wrong for the same reason. The graph for both of them will increase. Any time you raise a base greater than 1 to a power, the graph goes up. See below. The red graph is y = 12*1.1^2
The question is giving you a big hint by showing you which point to look at. When x = 1, y = 8. What will do that?
Is it 12 * 1/2 or is it 12 * 2/3
I think you will find it is 12*2/3 So the answer is D
Part B
This one is just the opposite, only now you have to figure out which graph you are getting. A is the only one that is obviously wrong. When x = 1, A will give
40* 1.5 which is 60 which is not enough.
C is too large. 40 * 3.25 = 130 so that does not describe the graph when x = 1.
So B and D are your only choices. D is still a little too big. See if you can get D to be 100 when D = 1
That leaves you with b
y = 40 * 2.25 = 90 which is just what you want.
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Answer:
.
Step-by-step explanation:
This is a geometric sequence that means there is a common ratio. That means there is a number you can multiply over and over to get the next term.
The first term is 27.
The second term is (1/3)(27)=9.
The third term is (1/3)(9)=3.
So the common ratio is 1/3.
That means you can keep multiplying by 1/3 to find the next term in the sequence.
The explicit form for a geometric sequence is where
is the first term and
is the common ratio.
We are given and
.
So the explicit form for the given sequence is .