1. Find the GCF of 3x3y5z and 21xy3z4. 2. Is √(x) – 7 a polynomial? Explain why or why not.

3. Is x5 + x2 + x a polynomial? Explain why or why not.

4. What is the degree of x5 + x2 + x? How do you know?

5. Simplify (3x3 + 8x2 – 2x + 4) + (6x2 + 4x + 4).

6. Simplify (5x4 – 3x2 + 7x – 10) – (2x4 – 3x3 + 6x – 17)

7. Multiply 9x3(4x + 7)

8. Multiply (3x – 1)(5x – 9)

1. what is the measure of ∠abc? what is the measure of ∠abd?

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?