training

Over what interval is this function constant?

• -5 < x < ∞
• -3 < x < 4
• 4 < x < ∞
• -5

When is the velocity decreasing?

• 0 < t < 60
• 40 < t < 60
• 15 < t < 40
• -40 < t < 0

How long did it take Sam to get to school?

• 5 minutes
• 20 minutes
• 1.25 km
• 1.25 minutes

Over which interval of time is this person returning home?

• 8:00 < x < 9:00
• 9:00 < x < 9:30
• 9:30 < x < 11:00
• 12:00 < x < 13:00

1) 1)             Let  5x + 3y =21

 

What is the value of  15x+ 9y ?

• 63

• 36

• 31

• 24

1)             Let  9x + 45y =108

 

What is the value of  5x+ 25y ?

• 45

• 50

• 60

• 90

1)             Let  x + 2y =6

 

What is the value of  1.5x+ 3y ?

• 13

• 9

• 7.5

• 12

   Ghassan  is forming the four-digit number 3033 using some matches from a box. The box originally contained 30 matches.

            He has already started and formed the first two digits, as     

            shown in the diagram. How many matches will remain

in the box when he has finished forming 3033

• 9

• 10

• 11

• 12

            Ghassan  is forming the four-digit number 3030 using some matches from a box. The box originally contained 40 matches.

            He has already started and formed the first two digits, as     

            shown in the diagram. How many matches will remain

in the box when he has finished forming 3030

• 14

• 16

• 18

• 22

1)    The sum of sixconsecutive integers is 3 what is the least ?

• -4

• -3

• -2

• 2