Gonna upvote
a class of 18 students took a math test. seven students had an average of 90. the other students had an average of 82.

what is the average for the whole class? round to the nearest whole percent.
a) 80
b) 83
c) 85
d) 87

Apolygon is shown on the graph: a polygon is shown on the coordinate plane. vertices are located at 3 comma 5, 1 comma 3, 1 comma 1, 2 comma 0, 4 comma 0, 5 comma 1, and 5 comma 3. what effect will a translation 3 units down and 2 units left have on the polygon? be sure to address how it could impact the angles, side lengths, and congruency between the original pre-image and the image. xd i need