Question

On a final exam, each multiple-choice question is worth 4 points and each word problem is worth 8 points. Lorenzo needs

least 50 points on the final to eam a "B" in the class. Which inequality represents x, the number of correct multiple-choice
questions, and y, the number of correct word problems, he needs to earn a "B"?
4x + 8y < 50
4x+8y 50
4x + 8y > 50
4x + y 2 50

Answer 1

4x + 8y = 50 or 4x + 8y > 50

Explanation:

To find which equation show the exact answer, Becasue he need at least 50 poitns to have a B, so:

4x + 8y must larger or equal to 50

In these choice, some I can't figure out what it means but the correct answer for this is:

4x + 8y = 50 or 4x + 8y > 50

Hope this help you :3

Answer 2

4x + 8y ≥ 50

Explanation:

Since x represents the multiple choice questions, and each of them is worth 4 points, the total points because of this type of questions is

4x

and y represents the word problems, and each of this is worth 8 point, so the total points because of this type of questions is

8y

Lorenzo needs at leat 50 points: this means 50 points or more, so the sum of the points he gets for each type of question must be equal to 50 points or more.

This is represented by the inequation:

4x + 8y ≥ 50