Recall the binomial theorem.

1. The binomial expansion of
is

Observe that


When we multiply these by
,
•
and
combine to make 
•
and
combine to make 
and the sum of these terms is

2. The binomial expansion is

We get the
term when
:

Vertical stretch by 2 units.
B
Answer:
18 credits per semester
Step-by-step explanation:
Answer:
y = 3x
Step-by-step explanation:
y = 13
x= 4
here
y∝x
that is
y= k x where k is constant
Since the equation is in the form
we know that


so we can write this
y = 3.23 x ≅ 3x
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The diagram and complete question is shown below. We know that the length (L) of the living scale in the drawing is:

We also know that the scale is:

Then, by using proportion we have:
