Find the regression line for the given data. Round to two decimal places, if necessary.
A. y = 0.95x + 3.07
B. y = 0.85x + 3.07
C. y = 0.75x + 4.07
D. y = 0.75x + 5.07
Answer: D
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Find the polar coordinates of the point(s) of intersection of the given curves for 
r = 7, r = 6 + 1 sin ?
A. 
, 
B. 
C. (7, ?)
D. 
Find the midpoint of the line segment joining the two points.(2, -6) and (-4, 0)
A. 
B. 
C. 
D. 
Determine the domain and range of the relation. State whether the relation is a function or not a function. 
A. domain: {1, 7, 3} range: {6, 13, 5, 10} function B. domain: {6, 13, 5, 10} range: {1, 7, 3} not a function C. domain: {1, 7, 3} range: {6, 13, 5, 10} not a function D. domain: {6, 13, 5, 10} range: {1, 7, 3} function
Solve the problem.Jim has gotten scores of 77 and 99 on his first two tests. What score must he get on his third test to keep an average of 85 or better?
A. at least 87 B. at least 79 C. at least 77 D. at least 88