That means 750 of the emails are not junk
Answer:

Step-by-step explanation:
We want to evaluate:

for x=-2 and y=-4.
We substitute to get:

We now simplify to get:



Answer: Since the dependent variable is the height in cm, and the independent variable is the color of light, then a testable question could be "Will the color of a lamp affect the height of plants?"
Answer:
60
Step-by-step explanation:
E.
It gives a very precise question which will give much data.