Paula conducts a study, recording the total distance a forest has advanced into a grassy valley. She uses this equation, where y is the number of years since Paula’s study began, and f is the total number of feet the forest has advanced. f = 3 y+ 54 If the forest has advanced into the valley 90 feet, how many years have passed since Paula’s study began

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Michelle is planting flowers in her garden. she wants the ratio of daises to carnations to be 3 to 2. michelle wants to plant a total of 35 flowers. how many daises should she plant?