B. -7
The answer all comes down to you getting -7/f.
Hope I helped!
You have to isolate c
the answer is 15
Answer:

Step-by-step explanation:
Hello!
A trinomial is a expression consisting of three different terms
To turn this into a trinomial we multiply everything to each other
<u> 3x </u>
3x * x = 
3x * 10 = 30x
<u> 8 </u>
8 * x = 8x
8 * 10 = 80
Now we put them all together in an equation

Combine like terms

The answer is 
Hope this helps!
Yes, (3, 2) is a solution to y = 2x - 4. (:
Range for boys = 20-8 = 12
Range for girls = 15-3 = 12
Range is same for both boys and girls.
median of boys = 12.5
median for girls = 6.5
Median is greater for the boys.
Hope it helps!