Use analytical methods to solve the equation.
= 
A. 3
B. -1
C. 1
D. -3
Answer: C
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Express the number in scientific notation.0.000315
A. 3.15 × 10-3 B. 3.15 × 104 C. 3.15 × 10-4 D. 3.15 × 10-5
Write the equation for the plane.The plane through the point P(6, 5, -5) and normal to n = 8i + 3j + 6k.
A. -8x - 3y - 6z = 33 B. 8x + 3y + 6z = 33 C. 6x + 5y - 5z = 33 D. -6x - 5y + 5z = 33
Solve the problem.If the formula P = 0.5643Y - 1092.57 can be used to predict the average price of a theater ticket after 1945, for what years will the average theater ticket price be at least 43 dollars? (Y is the actual year.)
A. 2015 or after B. 2013 or after C. 2023 or after D. 2011 or after
Solve.Natasha rides her bike (at a constant speed) for 3 hours, helped by a wind of 2 miles per hour. Pedaling at the same rate, the trip back against the wind takes 7 hours. Find find the total round trip distance she traveled.
A. 42 miles
B. 
miles
C. 21 miles
D. 10 miles