Core Mathematics

Question 1

1Which relation is a function?

Easy

A. {(4, 1), (4, 2), (5, 3)} B. {(2, 1), (2, 5)} C. {(1, 2), (2, 4), (3, 6)} D. {(1, 2), (1, 3)}

Question 2

2Solve 7 − 2x = 1.

Easy

A. 3 B. −3 C. 4 D. 2

Question 3

3A function f is defined by f(x) = (x + 3)/(x − 2). Find the value of x for which f(x) = 2.

Hard

A. 1 B. 5 C. 7 D. −7

Question 4

4Three consecutive odd numbers add up to 57. What is the largest of them?

Medium

A. 19 B. 23 C. 21 D. 17

Question 5

5A relation in which every input has exactly one output is a

Easy

A. set B. function C. variable D. sequence only

Question 6

6If f(x) = 2x − 1 and g(x) = x² + 1, find g(f(2)).

Hard

A. 9 B. 5 C. 17 D. 10

Question 7

7Solve x/4 + 3 = 5.

Easy

A. 8 B. 2 C. 32 D. 20

Question 8

8The cost C of hiring a bus is GH¢200 plus GH¢5 per km. How far can be travelled for GH¢450?

Medium

A. 45 km B. 90 km C. 50 km D. 40 km

Question 9

9Solve the inequality 3x − 5 > 7.

Easy

A. x ≥ 4 B. x > 4 C. x > 2/3 D. x < 4

Question 10

10The sum of four consecutive even numbers is 36. What is the smallest?

Easy

A. 4 B. 8 C. 6 D. 10