Answer:


Step-by-step explanation:
(
)
Multiply the exponents by 3
=

=

The answer will be y=3x-1. You will the steps in the picture
Answer:
b. Kathy
Step-by-step explanation:
We compare each of their score by how far away from the mean when in term of the standard deviation. Using the following formula

For John he is (85 - 75)/5 = 2.
For Kathy she is (80 - 50)/10 = 3.
Since Kathy is 3 standard deviation better than her class' average, while John is only 2's. We conclude that Kathy did better.
The answer is B. CD=KL, DE=LM, EF=MN, and so on