Add or subtract as indicated.
+ 
- 
A. 
B. 
C. 
D. 
Answer: D
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The amount L, in liters, of liquid remaining in a tank after t hours satisfies the equation of change 
. What is happening to the liquid in the tank when there are 31 liters present?
?
A. The amount of liquid is at a minimum. B. The amount of liquid in increasing. C. The amount of liquid is deceasing. D. The amount of liquid is at a maximum.
Solve the problem. Round your result to an appropriate number of significant digits.A line from the top of a cliff to the ground passes just over the top of a pole 5.0 ft high and meets the ground at a point 6.0 ft from the base of the pole. If the point is 78 ft from the base of the cliff, how high is the cliff?
A. 0.40 ft B. 0.00 ft C. 70 ft D. 65 ft
Solve by the method of elimination by substitution.3x + 2y = 93x + 2y = 5
A. x = 3, y = 2 B. x = 1, y = 1 C. Dependent D. Inconsistent
Multiply.(-4x4y4)(-2x4y2)
A. 8x6y8 B. 8xy6 C. 8xy8 D. 8x8y6