Determine if the following is a linear equation in one variable. If not, state why.1.1x - 2.4 = 0.7x + 1.28
A. It is a linear equation in one variable.
B. It is not a linear equation in one variable because it has more than one variable.
C. It is not a linear equation in one variable because it is not an equation.
D. It is not a linear equation in one variable because 1.1x has an exponent other than 1.
Answer: A
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Find the inverse of the function.f(x) = 7x3 + 6
A. f-1(x) = 
- 6
B. Not a one-to-one function
C. f-1(x) = 
D. f-1(x) = 
Use the bar graph to answer the question.The following graph shows the average starting salary for graduates of five different schools with a degree in mathematics. 
What was the least average starting salary among the five schools?
A. $39,388 B. $52,043 C. $36,400 D. $46,140
Perform the following operation.
?
?
A. 20 B. -30 C. 5 D. -15 E. 15
Solve.m + 
= - 
A. - 
B. - 
C. - 
D. 