Answer:
B, the second one.
Step-by-step explanation:
Take the equation, y=2x+1. 1 is the y-intercept, so that automatically eliminates some potential answer choices. Your slope is 2/1, so you would use rise over run to find the correct answer choice.
Answer:
Divide both sides by 3
Step-by-step explanation:
Divide both sides by 3 to isolate x.
x = 81