Answer: B. (-8, -6) D. (-2, 4)
<u>Step-by-step explanation:</u>
The y-value is positive when x is between -8 and -6 and when x is between -2 and 4.
So, the interval when y is positive is (-8, 6) ∪ (-2, 4).
Answer:
the answer is 1150
Step-by-step explanation:
as 800's 25% is 200 and 1000's 15% is 150
The required expressions are both equations 1 and 2 as shown:

.... 2
Complementary angles are angles that sum up to 90 degrees. For instance, and A and B are complementary if A + B = 90.
According to the question, if two complementary angles have measures of s and t then:

Twice of 's' is expressed as 
If t is less than twice s, this can be expressed as
.... 2
The required expressions are both equations 1 and 2 as shown:

.... 2
Learn more on word problems leading to simultaneous equations here: brainly.com/question/14294864