Determine if the following is a linear equation in one variable. If not, state why.1.4x + 4.7 = 0.7x + 1.41
A. It is not a linear equation in one variable because it is not an equation.
B. It is not a linear equation in one variable because it has more than one variable.
C. It is a linear equation in one variable.
D. It is not a linear equation in one variable because 1.4x has an exponent other than 1.
Answer: C
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Evaluate the integral.
A. 
tan-1 4x + C
B. 
tan-1 (x + 4) + C
C. 4 tan-1 
+ C
D. 
tan-1 
+ C
Solve the triangle. 
A. A = 38.9°, B = 31.6°, C = 109.5° B. A = 109.5°, B = 31.6°, C = 38.9° C. A = 109.5°, B = 38.9°, C = 31.6° D. A = 38.9°, B = 109.5°, C = 31.6°
Use the cofunction identities to find an angle ? that makes the statement true.cot 5? = tan 4?
A. ? = 
B. ? = 10°
C. ? = 
D. ? = 40°
Perform the indicated operation. Write the answer in scientific notation.
A. 4.2 × 10-9 B. 8.4 × 107 C. 8.4 × 10-9 D. 4.2 × 107