It costs $4 to go to the swimming pool. a membership at the pool costs $21. members pay $3 to use the pool each time. write an algebraic expression for the cost for a member to swim, including the cost of a membership.

Figure lmno is located at l (1, 1), m (4, 4), n (7, 1), and o (4, −2). use coordinate geometry to best classify quadrilateral lmno.

Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3

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?