check markChapter 2, Skills and Concepts

Choose the solution for the given variable.

  1. Solve for b: A = 1/2 bh
    1. b = 2A/h
    2. b = b/2h
    3. b = 2h/A
    4. b = 2Ah
  2. Solve for x: y = mx + b
    1. x = y – b/m
    2. x = (y+b)/m
    3. x = (y-b)/m
    4. x = y + b/m
  3. Solve for d: C = pi symbold
    1. d = Cpi symbol
    2. d = 1/Cpi
    3. d = pi/C
    4. d = C/pi
  4. Science Ohm's Law states that in an electrical circuit E = IR, where E represents the force in volts, I represents the current in amperes, and R represents the resistance in ohms. Solve this formula for I. Then find I if E = 6 volts and R = 0.15 ohms of resistance.
    1. I = ER ; 0.9 amperes
    2. I = R/E ; 0.025 amperes
    3. I = E/R ; 40 amperes
    4. I = 1/ER ; 1 amperes
    5. Write and solve an equation for each situation.
  5. The Great Seto Bridge in Japan is about 7.6 mi long. How long would it take you to cross the bridge if you were walking at 4 mi/h?
    1. 3.4 h or 3 h 24 min
    2. 1.9 h or 1h 54 min
    3. 3.6 h or 3 h 36 min
    4. 11.6 h or 11 h 36 min
  6. Botany A eucalyptus tree in New Guinea grew 10.5 meters in one year. How much will this tree grow in 3.5 years if it continues to grow at this rate?
    1. 36.75 m
    2. 3 m
    3. 7 m
    4. 14 m
  7. The sum of three consecutive integers is 582. Find the three integers.
    1. 192, 194, 196
    2. 1, 290, 291
    3. 193, 194, 195
    4. 500, 80, 2
  8. The sum of three consecutive even integers is –198. Find the three integers.
    1. –100, –90, –8
    2. –64, –66, –68
    3. –65, –66, –67
    4. –97, –1, –100
  9. Ocean Travel A supertanker left port traveling north at an average speed of 10 knots. Two hours later a cruise ship leaves the same port heading south at an average speed of 18 knots. How many hours after the cruise ship sails will the two ships be 209 nautical miles apart? (1 knot = 1 nautical mile per hour.)
    1. 6.75 h or 6 h 45 min
    2. 17.3 h or 17 h 18 min
    3. 7.46 h or 7 h 28 min
    4. 10.5 h or 10 h 30 min
  10. Recreation The handicap H of a bowler whose average is A is often found by using the formula H = 0.8(200 – A). A bowler's final score for a game is the actual score plus the bowler's handicap. Find the handicap of a bowler whose average score is 135.
    1. 25
    2. 20
    3. 14
    4. 52

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