Question

11. Conner earned these scores on the first three tests in science this term: 86, 88, and 78. What is the lowest score that Conner can earn on the fourth and final test of the term if he wants to have an average of at least 83? Inequality: Solution: Sentence:

Answer 1

He must have a score of 80 or higher.

Explanation:

`(86+88+78+x)/(4)`
`\geq` 83

`(252 +x)/(4)` ≥ 83 Multiply both sides by 4

252 + x
`\geq` 332 Subtract 252 from both sides

x
`\geq` 80

Answer 2

Answer:%80

Step-by-step explanation: take 83 x 4 (4 being the total number of test) and you get 332, then take the 332 and subtract the current test score (78,88,86). Finally you have your answer, %80