A student has taken three math tests so far this semester. His scores for the first three tests were 65​, 67​, and 69. Suppose his test scor

Question

A student has taken three math tests so far this semester. His scores for the first three tests were 65​, 67​, and 69. Suppose his test scores continue to improve at the same rate. What will be his grade on the sixth​ (and final)​ test? What will be his total score for all six​ tests?

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Jezebel 4 years 2021-08-27T12:37:15+00:00 1 Answers 18 views 0

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  1. Eirian
    0
    2021-08-27T12:39:09+00:00
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    Answer:

    75

    Step-by-step explanation:

    Scores for his first tests were 65, 67, 69.

    Rate of change: +2

    y=2x+63; 63 is the 0th test he took, his first test was 65, so 65-2=63. 2x is the rate of change, his tests scores increase by 2 each time.

    x=6, 6th test score

    y=2(6)+63

    y=12+63

    y=75

    So, on his 6th test he will get a score of 75

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