Answer:
A. 30 adults; B. 24 not dolls
Step-by-step explanation:
A.

B.
If five-eighths of the prizes were dolls, then three-eighths of the prizes were not dolls.

The answer is 28
work shown in picture below
The next number in the sequence is 8
The slope of line T is -1/5, because perpendicular lines have opposite reciprocal slopes, meaning the opposite sign (positive or negative) and flipped (whole number becomes a fraction).