Simplify.42 - (-7)
A. 10
B. 22
C. 9
D. 23
Answer: D
Mathematics
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Express the number in scientific notation.430,000
A. 4.3 × 105 B. 4.3 × 10-6 C. 4.3 × 106 D. 4.3 × 10-5
Mathematics
Provide an appropriate response.
Find b rounded to four significant digits if a = 5 cm and A = 19.1°. 
A. 15.28 cm B. 14.44 cm C. 5.291 cm D. 1.731 cm
Mathematics
Write the quotient in the form a + bi.
A. 
- 
i
B. 
+ 
i
C. 1 + 1i
D. 
+ 1i
Mathematics
The graph of y = f(x) is given. Use the graph to find the function value.
Find f(-4).
A. -4 B. 1 C. None of these D. 1.8
Mathematics