1. Trina has scores of 81, 80 and 83 on three exams. What score does she need on the last exam to get an average of no less than 85
2. Eric and joseph play in the same football team. Yesterday joseph scored 2 more than eric, but together they scored less than 10 goals. What is the possible number of goals joseph scored?
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Answer:
1. 96
2. J < 6
Step-by-step explanation:
1. (Average needed × Number of tests) - (Sum of the scores) =
85(4) - (81+80+83)
340 - 244
96
2. J = Joseph
E = Eric
Given:
J = E + 2
J + E < 10
Solution
E = J - 2
J + (J - 2) < 10
2J < 10 + 2
2J < 12
J < 6