A photocopier can copy 16 pages per minute.

How many pages can copied in 7,5 minutes ?

• 100 pages

• 120 pages

• 160 pages

• 175 pages

The number of hours to paint a house varies inversely with the number of painters working. A 2400-square foot house can be painted in 27 hours by 6 painters. How many painters would need to work in order to paint the house in 18 hours?

• 8 painters
• 10 painters
• 9 painters
• 11 painters

If four video tapes cost $3.20, what would ten video tapes cost?

• $8

• $10

• $6

• $5

6 pipes fill a tank in 120 minutes, then 5 pipes can fill it in _______ minutes

• 100 
• 174
• 144
• 108

12 men can dig a pond in 8 days. How many men can dig it in 6 days?

• 20

• 15

• 16

• 24

7 men can complete a work in 52 days. In how many days will 13 men finish the same work ?

• 36

• 28

• 42

• 56

David can complete a work in 6 days working 8 hours per day. If he works 3 hours per day, how many days will he take to complete the work ?

• 12

• 32

• 24

• 16

A book contains 120 pages and each page has 35 lines . How many pages will the book contain if every page has 24 lines per page ?

• 185

• 125

• 175

• 150

Expand -7(2x + 3)

• -14x-21

• 14x+21

• 5x + 4

• -14x +21

Factor

-3x - 21

• -3(x + 7)

• -4(x - 8)

• 3(x-7)

• -3(x-7)