Answer:
the first one
Step-by-step explanation:
y-y1=m(x-x1)
y-20=12(x-3)

simplify:

Answer:
-8a
Step-by-step explanation:
Answer: 3 • ? = -6
Reasoning: -6/ 3 = -2
3 • -2 = -6
Answer:
380
Step-by-step explanation:
7 x 40 = 280 + C = 380
C = Commision
500 x .2 = 100
C = 100
Answer:
15
Step-by-step explanation:
If A||B then the sum of given angles must be equal to 180°
2x + 5 + 5x - 80 = 180 add like terms
7x - 75 = 180 subtract 75 from both sides
7x = 105 divide both sides by 7
x = 15