Which statement about the figure MUST is true? Select all that apply A. n = 7
B. QS = 21
C. SR = 27
D. QR = 54

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

Solve 2x+y=3 x+y=5 in substitution method

Which point is a solution to y s 4x + 5?