Answer:
D. m+s=30
2m+3s=75
Step-by-step explanation:
let m be the no of multiple choice questions and s be the short questions then there are a total of 30 questions
m+s=30------A
there are 2 points for m(multiple choice questions) and 3 points for short questions (s) and totalling to 75
2m+ 3s=75
You have to orginize them from smallest to largest, 'x' is the median so I put it in the middle:
3, 4, 10, x,15, 18, 21
That means 11-14 could be x.
15 x 6 = 90 (total area of the door)
1 x 9 = 9 (area of the panel)
90 - 9 = 81 (area of the white portion)
