Simplify. Write your answers in the form of a+bi, where a and b are real numbers.(7 - 
)(4 + 
)
A. -73 + 43i
B. 73 - 43i
C. 73 + 43i
D. 2053 + 667i
Answer: C
Mathematics
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Provide an appropriate response.A letter or symbol that represents one or more unknown values is a(n):
A. equation B. known C. constant D. variable
Mathematics
Find an equation of the line described. Write the equation in slope-intercept form if possible.Through (0, 0) and 
A. y = 
B. y = 
x
C. y = 6
D. y = 6x
Mathematics
The following line graph shows the number of hours needed to prepare for various tests. Use the graph to answer the question.
How many more hours were needed to prepare for Test 4 than for 
.
A. 1 B. 4 C. 2 D. 3
Mathematics
Write the number as a fraction. Do not simplify.798.9355
A. 
B. 
C. 
D. 
Mathematics