Math 24

Question 1:

What is the value of -4x + x² when x is -5?

Question 2:

Ms. Yen is interested in what percent of her algebra students try the extra credit problems she gives on tests. After one test, she found that 14 students tried the extra credit problem out of 21 students total. What percent of her students tried the extra credit?

Question 3:

What is the solution of 5x + 7 = 2(x – 7)?

Question 4:

If the length of a rectangle is halved while its width remains the same, then its area:

Question 5:

Which of the following operations will produce the largest result when substituted for the blank in the expression: -4 ____ 1/5

Question 6:

One tractor is 4 meters west and 10 meters south of the barn, while another tractor is 3 meters east and 7 meters north of the same barn. Approximately how many meters separate the two tractors?

Question 7:

[No Calculator] A function f satisfies f(3) = 2 and f(2) = 6. A function g satisfies g(2) = 4 and g(3) = 9. What is the value of g(f(3))?

Question 8:

[Calculator Allowed]

d = -4.9s² + 30s.

The equation above expresses the approximate distance from the ground, d, in meters, of a ball s seconds after it is launched vertically from the ground with an initial velocity of 30 meters per second. After approximately how many seconds will the ball hit the ground?