Help please? I’m not sure what to do??? A student has scores of 76.5, 79, and 81.75 on his first three tests. He needs an average of at least 80 to earn a grade of B. What is the minimum score that the student needs on the fourth test to ensure a B?

82.75 is the correct answer

Step-by-step explanation:

76.5 + 79 + 81.75 + 82.75 = 320

320 / 4 = 80

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3

answer: no, but if it does it's a obvious pattern.

step-by-step explanation: