Problema Solution
A student's grade in a course is the average of 4 test grades and a final exam that is worth three times as much as each test. Suppose a student has test grades of 91, 89, 80, and 93. Write an equation to model this situation where x is the student's grade on the final exam and yis the student's average for the course.
Answer provided by our tutors
y = (91 + 89 + 80 + 93 + 3x)/7
by simplifying we get
y = (3/7)x + 353/7
is the equation for the student's average for the course
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