It would be C, because a straight line equals to 180 degrees, and since 3 is 86, and lines m and n are parallel, 180-86 = C.94. Hope this helps!
Answer:

Step-by-step explanation:
Given:
.
we need to find the correct form for
if the equation is solve using undetermined coefficients.
A first order differential equation
is said to be homogeneous if
for all t.
Consider homogeneous equation 
Let
be the solution .
We get 
Since
,
.
So, we get solution as 
As constant term and
are already in the R.H.S of equation
, we can take
as 
Answer:
C) Tom did not distribute to both terms in parentheses.
Step-by-step explanation:
Addition within a paranthesis has a distributive property to the multiplier outside the paranthesis. Ignoring this will lead to a wrong value for the operation.