Final answer:
Mark needs to earn 190 points on the 150-point final to get an A in the class.
Step-by-step explanation:
To get an A in the class, Mark needs to earn at least 90% of the 650 points possible. He has already earned 92 points on each of the five 100-point assignments, which totals to 460 points so far. To calculate how many points he needs on the final, subtract his current total from the desired total: 650 - 460 = 190 points.