1. Which of the following is an algebraic expression? a. X+5= 7
b. 5-2x = 3
C. 5x +4- 2x
d. -2 = 3x + 1

Acompany wants to reduce the dimensions of its logo by one fourth to use on business cards. if the area of the original logo is 4 square inches, what is the area of the logo that will be used on the business cards?

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums, 28 play drums, 18 play the guitar. what is the probability that the applicant who gets the job plays drums or guitar?

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.