Which equation has infinitely many solutions? A. 6x + 5 = 6x + 7
B. 6x + 7 = 5x + 7
C. 3(x + 2) – 1 = 3x + 1
D. 4(x + 1) – 3 = 4x + 1

Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

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?