Use the intercept form to find the equation of the line with the given intercepts. The intercept form of the equation of a line with intercepts (a, 0) and (0, b) is
?
?
?
x-intercept: 
y-intercept: 
?
?
A. 
B. 
C. 
D. 
E. 
Answer: C
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The polar equation of a circle is given. Give polar coordinates for the center of the circle and identify its radius.r = -4 cos ?
A. C(4, ?/2), radius = 4 B. C(2, ?), radius = 2 C. C(4, ?), radius = 4 D. C(2, ?/2), radius = 2
Simplify the expression. If any variables exist, assume that they are positive.2
- 
A. 2x
- 1
B. 2(x -1)
C. (x -1)
D. (2x -1)
Divide.- 
÷ 
A. - 
B. - 
C. 
D. 
A tank initially contains 150 lb of salt dissolved in 400 gal of water. Saltwater containing 5 lb of salt per gal enters the tank at the rate of 5 gal per min. The mixture (kept uniform by stirring) is removed at the same rate. How many pounds of salt are in the tank after an hour?
What will be an ideal response?