Exam 2 Review

Simplify the expression by combining like terms.

3x + 5y + 8 - 2x + y - 12

• 5x + 6y - 4

• x + 5y - 4

• x + 6y + 4

• x + 6y - 4

Simplify.

7xy + 3x - 4 + 2(x + y)

• 9xy + 3x - 4

• 7xy + 5x + y - 4

• 7xy + 5x + 2y - 4

• 12xy - 4

Direct or Inverse Variation?

number of machines working versus the time it takes to complete a project

• direct variation

• inverse variation

Direct or Inverse Variation?

The amount of money made versus the amount of hours worked

• direct variation

• inverse variation

Direct or Inverse variation?

Diameter of a gear versus the revolutions per minute

• Direct variation

• Inverse variation

1 meter = 3.2808 feet

How many meters is 50 feet?

• 164.04 meters

• 15.24 meters

• 53.28 meters

• 46.72 meters

4 Liters = _centiliters?

• .04 cL

• .4 cL

• 40 cL

• 400 cL

2743mm =_m?

• 2.743 m

• 27.43 m

• 274300 m

• 2,743,000 m

1800 sec = _ hours?

• 6,480,000 h

• 30 h

• .5 h

• 108,000 h