Answer:
<u>Sam has to get at least a 96 in order to pass the class with a B.</u>
Step-by-step explanation:
<em>To find this you use mean in this format:</em>
Test Scores + x (Exam Grade Needed) / # of Tests ≥ 80 (Which Is a B)
<em>Substitute:</em>
82 + 70 + 72 + 80 + x / 5 ≥ 80
<em>Add:</em>
304 + x / 5 ≥ 80
<em>Get Rid of the Denominator (Multiply Both Sides By 5):</em>
(5) 304 + x / 5 ≥ 80 (5)
<em>Multiply:</em>
304 + x ≥ 400
<em>Isolate x (Subtract 304 From Both Sides):</em>
x ≥ 96
<u>This means that Sam has to get at least (Greater than or equal to) a 96 in order to pass with a B average.</u>