Answer:

Step-by-step explanation:
A perfect square trinomial is defined as an expression that is obtained from squaring a binomial equation. The perfect square trinomial is in the form of
.
The given expression is :

The co-efficient of the x-term in
is '16'.
So half of the term 16 ,

and 
Now add 64 to the expression:

Therefore, the perfect square trinomial is

Usually, "simplify" means to remove any common factors and express the sum as a single fraction, often in multiplie-out form.
If you factor what you've got, you will write it as
Answer:
69.12 in, or 22pi in terms of pi
Step-by-step explanation:
Circumference of circle formula: 2piR
Radius of 22 in diameter is 11 in
So, 2pi(11) is about 69.12 in
The variable is d, so the coefficient is 1/4. Factor out 1/4 and you are left with (d-3).
Answer: C, 3500
Step-by-step explanation:
Each jump from year to year is multiplying by abt 1.6 (200/124 = 1.62, 322/200 = 1.61, etc.) so to find 1978 you'd multiply 2167 * 1.6
2167 * 1.6 = 3467.2 = closest to 3500