Answer: Angle 1 is 129 degrees. Angle 2 is 51 degrees.
Step-by-step explanation: 129+51=180 129-51=78
Answer:

Step-by-step explanation:
Given a geometric sequence, the nth term of the geometric sequence is obtained by using the formula:

If the eleventh term, 
and the common ratio, r=-2.
Then:

The explicit formula for the sequence is:

Answer:
a. 135 doorknobs
b. 
Step-by-step explanation:
The price-demand function is:

a. At a price of $36.30, the number of doorknobs sold, 'x' is:

Rounding it down to the nearest whole unit, the company can sell 135 doorknobs at $36.30
b. Revenue is the product of the price, p(x), by the demand, x. Therefore, the Revenue function is:
