Solve using the problem-solving strategy for systems of linear equations.Julie and Eric row their boat (at a constant speed) 27 miles downstream for 3 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 9 hours. Find the rate of the current.
A. 6 mph
B. 2.5 mph
C. 4 mph
D. 3 mph
Answer: D
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Find the center, foci, and vertices of the ellipse.3x2 + 5y2 - 36x + 70y + 338 = 0
A. 
+ 
= 1
center: (6, -7); foci: (7.4, -7), (4.6, -7); vertices: (8.2, -7), (3.8, -7)
B. 
+ 
= 1
center: (-6, 7); foci: (-4.6, 7), (-7.4, 7); vertices: (-8.2, 7), (-3.8, 7)
C. 
+ 
= 1
center: (-6, 7); foci: (-4.6, 7), (-7.4, 7); vertices: (-8.2, 7), (-3.8, 7)
D. 
+ 
= 1
center: (6, -7); foci: (7.4, -7), (4.6, -7); vertices: (8.2, -7), (3.8, -7)
Provide an appropriate response.Solve the following system of equations using the addition method: 2x + 3y = -5 4x - 9y = 35
Fill in the blank(s) with the appropriate word(s).
Locate the fraction on the number line.
A. 
B. 
C. 
D. 
Find the slope and the y-intercept of the given line.5x + 7y = 48
A. -1
; 
B. 
; 
C. - 
; 
D. 1
; 