If p(6, -2), q(-2, 8), r(-4, 3) and s(-9, y) find the value of y so that pq is perp to rs pls answer quick lol im impatient

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

The cost for an uberi is $2.50 plus $2.00 mile. if the total for the uber ride was $32.50, how many miles did the customer travel?