Find the simple interest and amount for the value of principal P, rate r per year, and time t.P = $7800, r = 5
%, t = 4 years and 6 months
A. $18,866.25, $26,666.25
B. $1886.63, $5913.38
C. $188.66, $7988.66
D. $1886.63, $9686.63
Answer: D
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Rewrite the subtraction problem as an addition problem.(-11) - (-11)
A. (-11) - (+11) B. (-11) + (-11) C. (-11) + (+11) D. None of the above
Evaluate the definite integral by using the method of integration by parts.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Graph the ellipse. Label the foci and the endpoints of each axis.
+ 
= 1
A. F(±2
, 0); V(±4, 0); no endpoints
B. F(±
, 0); V(±5, 0); U(0, ±2)
C. F(±2
, 0); V(±4, 0); U(0, ±2)
D. F(0, ±2
); V(0, ±4); U(±2, 0)
Solve the problem.A barge takes 5 hours to move (at a constant rate) downstream for 45 miles, helped by a current of 2 miles per hour. If the barge's engines are set at the same pace, find the time of its return trip against the current.
A. 9 hr B. 90 hr C. 5 hr D. 7 hr