The explicit formula for given sequence is: 
Step-by-step explanation:
Given sequence is:
-1,4,-16,64.....
We can see that there is no same difference between consecutive terms so we will find common ratio to see if it is a geometric sequence.
Here

The explicit formula for geometric sequence is:

Putting the values of r and a1

Hence
The explicit formula for given sequence is: 
Keywords: Geometric sequence, common ratio
Learn more about geometric sequence at:
#learnwithBrainly
$36 because 20% of 45 is 9 and 45 - 9 is 36!
Answer:
128
Step-by-step explanation:
all angles of a triangle will always equal 180
so, we know 2 angles
180-40
140-1128
Part 1:
Given that x represents the <span>number of apple pies that can be made and y represents the number of apple cobblers that can be made.
Given that a</span><span>n
apple pie uses 4 cups of apples and an apple cobbler
uses 2 cups of apples and there are 16 cups of apples available.
</span>A<span>n inequality to show the constraint on the amount of apples available is given by:
4x + 2y ≤ 16
</span>
Part 2:
<span>Given that an
apple pie uses 3 cups of flour and an apple cobbler
uses 3 cups of flour and there are 15 cups of flour available.
</span>A<span>n inequality to show the constraint on the amount of flour available is given by:
3x + 3y ≤ 15
Part C:
The </span><span>non negativity contraints on x and y are:
x ≥ 0 and y ≥ 0
</span>