Which of the system has only one solution? A. Y = x + 5 and Y = -3x + 6
B. Y = x + 2 and Y = x + 4
C. Y = abs(x - y) and Y = 0.2x + 1
D. Y = x2 – 1 and Y = 1.5x + 1

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?