Answer:
325 pencils, 650 markers, 975 pens
Step-by-step explanation:
in picture.
ANSWER

EXPLANATION
The given matrix is a 4 by 4 matrix.
We want to find

This is the entry in Row 1 Column 4.
We trace row 1 Column 4 and identify the entry in their intersection.
This entry is 5

Answer: mean is 66 and the median height is 68.
Step-by-step explanation: uh I dont know what to put here....?
Answer:
565.71 yd²
Step-by-step explanation:
Surface area = 
Area = 2 × 22/7 × 6 (6 + 9)
Area = 22 × 12/7 × 15
Area = 565.71 yd²