150 + 20x, where x is the number of cellphones sold
We can simplify across between the 5 and the 50 and also between the 42 and the 3.
Answer:
B. (x+4)(x+i)(x-i)
Step-by-step explanation:
Let 
We can factor this polynomial by grouping:

We factor further to obtain:


We apply difference of two squares to get:

Answer:
-2
Step-by-step explanation:
Hey,
The lower quartile is the median of the lower half of the data set.
The median is the middle most number or the average of the two middle most numbers depending on how many values there are.
Cheers,
Izzy