Question

A student has scores of 99% , 98%, 100%, and 78% on their exams in class. If the student wants to earn an "A" in the course the

average score needs to be 90% or above. In interval notation, what does their score on the next exam need to be to get at least
a 90% average?
[90, 100]
[80, 100]
[95, 100]
O [75,100]

Answer 1

[75, 100]

Explanation:

Assuming all exams are out of the same points (if they are different points the student might not need even a 1 percent)

they need a 450 / 500

currently they have a 375 / 400

450 - 375 = 75 percent minimum