5. Mustafa intends to save RM18,000 into their three children's account; Hanif, Syukri and Khairil; in the ratio \( 3: 4: x \). If Hanif gets RM6,000, find a. the total amount received by Khairil. b. the value of \( x \). (3 marks)

6. \( -16-(-12)+(-8) \)

3. \( -10-9 \)

Use the model to find \( 530 \div 5 \). First, find the missing side lengths. Then, find the quotient. \( 530 \div 5=\square \)

To be adopted, a resolution must be approved by at least \( 2 / 3 \) of the members of the assembly. There are 435 members in the assembly. Find the number of members who must approve the resolution for it to be adopted.

11. You begin a hike in Death Valley, California, at an elevation of -86 meter You hike to a point of elevation at 45 meters. What is your change in elevation?