PLEASE HELP A group of adults and students buy tickets for a dance performance.

Each ticket costs $4.65.
The total cost of the tickets for the group is $93.00.
There are exactly 3 adults in the group
What is the number of students in the group?

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

What are the values of each variable in the diagram below?

Quadrilateral efgh was dilated with the origin as the center of dilation to create quadrilateral e'f'g'h'. the quadrilateral was dilated using a scale factor of 2.5. the lengths of the sides of quadrilateral efgh are given. what is the length of side f'g'?