Find the mass of the wire that lies along the curve r and has density ?.r(t) = 
i + 6tj, 0 ? t ? 1; ? = 4t
A. 
units
B. 
units
C. 2 units
D. 
units
Answer: D
Mathematics
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side length = 5
yd
A. 35
yd
B. 46 yd
C. 37
yd
D. 40
yd
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Determine the unit rate.2296 cars in 820 households
A. 2.8 cars/household B. 1476 cars/household C. 0.357 car/household D. 3116 cars/household
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Write the shaded area in the figure as a mixed number and as an improper fraction.
A. 1
; 
B. 1
; 
C. 1
; 
D. 1
; 
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