Class XI

If 102y = 25, then 10-y equals:
  1. -1/5
  2. 1/625
  3. 1/50
  4. 1/5
The distance light travels in one year is approximately 5,870,000,000,000 miles. The distance light travels in 100 years is:
  1. 587 × 108 miles
  2. 587 × 1010 miles
  3. 587 × 10-10 miles
  4. 587 × 1012
Mrs. Rodger got a weekly raise of $145. If she gets paid every other week, write an integer describing how the raise will affect her paycheck.
  1. every week her salary will increase by $ 145.
  2. every week her salary will increase by $ 155.
  3. every week her salary will increase by $ 140.
  4. every week her salary will increase by $ 150.
If (0.2)x = 2 and log 2 = 0.3010, then the value of x to the nearest tenth is:
  1. -10.0
  2. -0.5
  3. -0.4
  4. -0.2
. A man has $ 10,000 to invest. He invests $ 4000 at 5 % and $ 3500 at 4 %. In order to have a yearly income of $ 500, he must invest the remainder at:
  1. 6 %
  2. 6.1%
  3. 6.2 %
  4. 6.4 %
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