Question

Charley's grade in the three quarters are 85, 88, and 92. If she targets to have an average

Answer 1

Step-by-step explanation:

We can set up an average equation in the form, where x is the last score in the fourth quarter:

$\frac{85 + 88 + 92 + x}{4} = 90$

$85 + 88+92 + x =360\\\\x = 95$

She needs at least a 95 on the last quarter to average 90 in all four quarters.