Question 6 of 46Rex is four times as old as Ted. If the sum of their ages is 30, how old is Ted?
Correct Answer: D
Question 7 of 46On a real number line, x = -4 and y = 7. What is the length of the line XY?
Correct Answer: A
Question 8 of 46Reggie has enough flour to last for 40 days. If he increases his use of flour by 25%, however, how many days' worth of flour will he have?
Correct Answer: C
Question 9 of 46If x = 3 and y = -1, then 3x2 + 2xy `" 5 = ?