Class XI

The fraction (5x-11)/(2x2 + x - 6) was obtained by adding the two fractions A/(x + 2) and B/(2x - 3). The values of A and B must be, respectively:
  1. 5x, -11
  2. -11, 5x
  3. -1, 3
  4. 3, -1
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.
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
If 102y = 25, then 10-y equals:
  1. -1/5
  2. 1/625
  3. 1/50
  4. 1/5
The value of x + x(xx) when x = 2 is:
  1. 16
  2. 10
  3. 18
  4. 36
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