A specialty running shoe store just opened. During its first week, the store sold 70 pairs of shoes. The sales goal for the store is to sell 30 more pairs of shoes each week. Write an explicit formula and a recursive formula to represent the number of pairs of shoes sold each week.

Acity plans to build a new rectangular-shaped park. the perimeter of the park will be 940 meters. the width of the park will be 300 meters. what will be the length, in meters, of the new park?

With #! i’ve tried to figure it out but i can’t.

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?