Solve the system by the addition method.
A. {(
, 
), (-
, 
), (
, -
), (-
, -
)}
B. {(
, 
), (-
, -
)}
C. {(0, 0)}
D. {(
, 
), (-
, 
)}
Answer: A
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Fill in the missing value.3.2 L = mL
A. 320 B. 0.0032 C. 0.32 D. 3200
Find a rectangular equation for the curve and describe the curve.x = 
, y = t; -4 ? t ? 4
A. x = 
; portion of a circle with radius 4
B. x = 
; circle with radius 4
C. y = x2 - 16; portion of a parabola
D. y = -x2 + 16; portion of a parabola
Find the intercepts for the graph of the equation.x + y = 0
A. (0, 4); (-4, 0) B. (0, -4); (0, 4) C. (-4, 0); (4, 0) D. (0, 0); (0, 0)
Solve.30 marbles are to be divided into three bags so that the second bag has three times as many marbles as the first bag and the third bag has twice as many as the first bag. If x is the number of marbles in the first bag, find the number of marbles in each bag.
A. 1st bag = 6 marbles; 2nd bag = 18 marbles; 3rd bag = 12 marbles B. 1st bag = 5 marbles; 2nd bag = 10 marbles; 3rd bag = 15 marbles C. 1st bag = 6 marbles; 2nd bag = 14 marbles; 3rd bag = 10 marbles D. 1st bag = 5 marbles; 2nd bag = 15 marbles; 3rd bag = 10 marbles