Find the vertex and y-intercept and graph the equation.y = x2 + 9
A. vertex: (0,-9); y-intercept: -9
B. vertex: (0, 9); y-intercept: 9
C. vertex: (0, 9); y-intercept: 0
D. vertex: (9, 0); y-intercept: 81
Answer: B
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Solve the problem.Find the mass of the lamina bounded by 
if 
.
A. 
?
B. 
?
C. 
?
D. 
?
Calculate the circulation of the field F around the closed curve C.F = x2y3i + x2y3j; curve C is the counterclockwise path around the rectangle with vertices at 
, and 
A. - 252 B. -432 C. 0 D. 900
Perform the indicated arithmetic.9
? 
A. -43
B. -36
C. -42
D. -38
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. 2013 or after B. 2023 or after C. 2011 or after D. 2015 or after