Joan did 21 is not a prime number good luck!!!
To solve this problem you must apply the proccedure shown below:
1. You have the folllowing expression given in the problem above:

2. The first thing you must do is to factor the denominator, as following:

3. Now, simplify it and apply the distributive property in the denominator:

The answer is: 
Answer:
y = -2x + 6
Step-by-step explanation:
y = mx + c
m = (2-4)/(2-1) = -2/1
m = -2
y = -2x + c
When x = 1, y = 4
4 = -2(1) + c
c = 4 + 2 = 6
y = -2x + 6
Answer:
(2, -8)
Step-by-step explanation:
174/29 = 6 times the difference
17*6 = 102
12*6= 72
34*6 =204
15*6 = 90
so the answer is A