The ratio of blue to red marbles to red marbles in a bag is 11:9. If there are 99 blue marbles in a bag, how many red marbles are there?

Nell has a sales clerk job that pays $12 per hour for regular gas work hours. she gets double time for any hours over 40 that she works in a week. how many hours did nell work if her weekly pay was $744

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

How do i do this? i don’t understand