1. A function is given as f (x) = 2x -1. Find f -1 (x) 2. The ratio 3l (liter):45ml(milliliter) can be fully simplified as ______. 3. A fruit punch drink is to be made for a party. It consists of...

1. A function is given as f (x) = 2x -1. Find f^-1
(x)

2. The ratio 3l (liter):45ml(milliliter) can be fully simplified as ______.

3. A fruit punch drink is to be made for a party. It consists of orange juice, pineapple juice and apple juice in the ratio 6:3:1. If we want to fill a 12litre bucket with the punch, how much orange juice will be needed?

4. Suppose that the value of the assets (in thousands of RM) of a company after t years is given by V(t) = k - 80e^-0.3t
(where k is a constant). Given that the initial value is 20. Find the value (in thousands of RM) after 10 years.

5. A spherical balloon has a volume of 1000 cm3. It is then inflated so that the diameter of the balloon is doubled. The volume of the balloon will now be __________.

6.  The solution of the equation of 2^3x= 4^{x +1}
 is __________.

7. A bank pays simple interest at the rate of 8% per year for certain deposits. If a customer deposits RM2,000 and makes no withdrawal for 4 years, what is the interest earned at the end of 4 years?

8. Given the sequence, a_n
= 3n + 2. Find the sum of the first 10 terms in the sequence.

9. In a class of 25 students, there are 15 boys and 10 girls. If a student is chosen at random from the class, the probability that the student is a boy is __________.

10. Postcodes in a country begin with either 1, 2, 3, 4, 5, 6, 7 or 8 followed by 2 more digits. How many of these postcodes can there be?

11. A die is cast. The probability that the number on the uppermost face is more than 3 is __________.

12. The probability of rolling at least one six is 11/36. What is the probability of the complementary event?

13. A cylindrical can without a top is made to contain V cm³

 of liquid. Find the dimensions that will minimize the cost of the metal to make the can.

Extracted text: y = x' +1, 10. Which of the following could be the graph of А. 10+ -15 -10 -5 В. 10+ -15 10 -5 C. 10+ -15 -10 -5 D. 10+ -15 10 B.


Extracted text: 8. Which of the following sequence is not a term of 36? А. Tn = n? В. Tn=6n С. Tn = 6" – 6n D. Tn = 4n? Which of the following is the exact solution of 2x' + 3x – 5 = 0? А. x = 1 or x = В. x = 1 or x = PECIME С. x = -1 or x = 5 x = -1 or x = D. 2 9.