Alex scored 98,72, and 87 on his first three math test. What must he score on the next test to have an average of at least 86 (P. S I need quickly no need to rush yourself just quickly)

Step-by-step explanation:

In order to find what score Alex must earn to have an average of 86 on all his tests, we need to first note what the formula to find the average of a data set is.

What the formula means is that we have to add up all the values then divide by the total number of values.

Let's represent our unknown number as .

(since we want AT LEAST an 86).

Let's solve this inequality for x.

So, Alex must score at least an 87% on his next quiz to have an average of 86%.

Hope this helped!

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

answer: its c because when it has a magnet next to it it will move away from the mixture. hope this

step-by-step explanation: