Combine like terms.3x - 8x
A. 5x
B. -5x
C. 11x
D. -5x2
Answer: B
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Find the slope and the y-intercept of the line.4x - 5y = 5
A. Slope: 1; y-intercept: (0, 1)
B. Slope: 
; y-intercept: (0, -1)
C. Slope: - 
; y-intercept: (0, 1)
D. Slope: -1; y-intercept: (0, -1)
Determine whether the circle with the given equation is symmetric to either axis or to the origin.3x2 + 3y2 + 6x - 6y = 13
A. Symmetric to neither axis nor origin B. Symmetric to x-axis C. Symmetric to both axes D. Symmetric to x-axis and origin
Evaluate the cylindrical coordinate integral.
A. 144? B. 432? C. 540? D. 48?
Solve the problem.The instantaneous growth rate of a population is the rate at which it is growing at every instant in time. The instantaneous growth rate r of a colony of bacteria t hours after the start of an experiment is given by the function 
for 
Find the times for which the instantaneous growth rate is zero.
A. 1 sec, 2 sec, and 4 sec B. 2 sec and 4 sec C. 1 sec and 2 sec D. 1 sec