Evaluate as instructed.Use 
and 
to evaluate 
A. -8
B. 12
C. -4
D. 4
Answer: A
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Measurements are made at two different times. Find the absolute change and then find the percentage change. Round answers to the nearest tenth if necessary.The unemployment rate in Midtown a decade ago was 20%. This year it was 24%.
A. Absolute change: 20 percentage points Percentage change: 4% B. Absolute change: 4 percentage points Percentage change: 16.7 % C. Absolute change: -4 percentage points Percentage change: 16.7 % D. Absolute change: 4 percentage points Percentage change: 20%
Provide an appropriate response.The earth is approximately 92,900,000 miles from the sun. Write this number in scientific notation.
A. 9.29 × 10-7 B. 9.29 × 107 C. 9.29 × 108 D. 9.29 × 106
Complete the exercises using counting techniques. How many different 4-letter radio-station call letters can be made if the first letter must be K or W, letters may be repeated, and the call letters cannot end in an O?
A. 35,152 B. 33,800 C. 16,900 D. 456,976
Simplify.
A. 
B. 
C. 
D. 