A student has test scores of $$ 62 \%, 79 \% $$, and $$ 85 \% $$ in a government class. What must she score on the last exam to earn a B ( $$ 80 \% $$ or better) in the course? SUBMIT ANSWER

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Let the score needed on the last exam be $$ x \% $$.

1. The sum of the four exam scores must be at least $$ 4 \times 80\% = 320\% $$.

2. The sum of the first three scores is:
   $$
   62\% + 79\% + 85\% = 226\%
   $$

3. Set up the inequality for a $$ B $$ in the course:
   $$
   226\% + x\% \geq 320\%
   $$

4. Solve for $$ x $$:
   $$
   x\% \geq 320\% - 226\% = 94\%
   $$

Thus, the student must score at least $$ 94\% $$ on the last exam to earn a $$ B $$ in the course.
The student needs to score at least 94% on the last exam to earn a B in the course.

A student has test scores of , and in a government class. What must she score on the last exam to earn a B ( or better) in the course?
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A student has test scores of , and in a government class. What must she score on the last exam to earn a B ( or better) in the course? SUBMIT ANSWER