Provide an appropriate response.Solving for which variable in which equation involves the least amount of work? 7x - 5y = 19-12x - 6y = -120
A. x in equation 2
B. x in equation 1
C. y in equation 1
D. y in equation 2
Answer: D
Mathematics
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Divide.
A. 
- 
i
B. 
+ 
i
C. 1 + 
i
D. 1 + 
i
Mathematics
Use the horizontal line test to determine whether the function is one-to-one.
A. Yes B. No
Mathematics
Provide an appropriate response.Suppose you want to solve the following problem. A teacher can grade 7 essays in 2 hours. At this rate, how many essays will she be able to grade in 5 hours? Which of the following proportions will give the correct answer?(i) 
= 
(ii) 
= 
(iii) 
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(iv) 
= 
A. (i) and (iv)
B. (i) only
C. (iii) only
D. (ii) and (iv)
Mathematics
Plot the point given in polar coordinates.
A. 
B. 
C. 
D. 
Mathematics