Question

Two tutoring programs model test scores based on study hours (x). Program A's model is y = 3.5x + 70. Program B's model is y = 2.8x + 80. Which program predicts a higher score for a student who studies for 20 hours?

Answer 1

Compute each model at x = 20:

- Program A: y = 3.5(20) + 70 = 70 + 70 = 140
- Program B: y = 2.8(20) + 80 = 56 + 80 = 136

Program A predicts the higher score (140 vs. 136), by 4 points.