an algebra student has test scores of 84,76, and 88 on his first three tests. what scores must he earn on his fourth test so that his average is 85 or higher
(84+76+88+T)/4>=85
solve for T
To determine the score the algebra student must earn on his fourth test to achieve an average of 85 or higher, we can follow these steps:
Step 1: Calculate the current sum of the student's test scores.
84 + 76 + 88 = 248
Step 2: Calculate the minimum total score needed to achieve an average of 85 over four tests.
(85 * 4 = 340) - 248 = 92
The student must earn a minimum score of 92 on his fourth test to achieve an average of 85 or higher.