A student has test scores of 68%, 75%, and 79% in a government class. What must she score on the last exam to earn a B (80% or better) in the course?

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Mathematics

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8 January, 14:48

A student has test scores of 68%, 75%, and 79% in a government class. What must she score on the last exam to earn a B (80% or better) in the course?

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Owen Roberts · Answer 1

68% + 75 % + 79 % + x : 4≥ 80%

.68 +.75 +.79+x : 4 * 4 ≥. 80*4

.68 +.75 +.79+x ≥ 3.2

2.22 + x ≥ 3.2

2.22 - 2.22+x ≥ 3.2 - 2.22

x ≥ 0.98

She has to get at least 98% to get an B.