Solve the equation. Write complex solutions in standard form.x2 - 8x + 41 = 0
A. -4 ± 5i
B. 9, -1
C. 4 ± 5i
D. 8 ± 10i
Answer: C
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Find the indicated measure of central tendency.The local Tupperware dealers earned these commissions last month:$2731.69$1461.75$2718.98$3873.16$4146.13$2266.86$3358.67$3834.28$3285.07$2634.84What was the mean commission earned? Round your answer to the nearest cent.
A. $3788.93 B. $3025.14 C. $3031.14 D. $3367.94
Solve.Martha can rake the leaves in her yard in 3 hours. Her younger brother can do the job in 4 hours. How long will it take them to do the job if they work together?
A. 
hr
B. 
hr
C. 12 hr
D. 4 hr
Solve the problem.The position of a projectile fired with an initial velocity v0 feet per second and at an angle ? to the horizontal at the end of t seconds is given by the parametric equations 
Suppose the initial velocity is 7 feet per second. Obtain the rectangular equation of the trajectory and identify the curve.
A. y = - 
+ (tan ?)x; parabola
B. y = - 
+ (cot ?)x; hyperbola
C. y = 
+ (cot ?)x; parabola
D. y = - 
+ (tan ?)x; ellipse
Solve the problem.The table shows the velocity of a remote controlled race car moving along a dirt path for 8 seconds. Estimate the distance traveled by the car using 8 subintervals of length 1 with right-end point values.
A. 178 in. B. 188 in. C. 184 in. D. 194 in.