Solve the problem.The angle between a 90-pound force F and 
= 3i + 2j is 30°. Find the work done by F in moving an object from A to B.
A. ? 324.50 foot-pounds
B. ? 389.71 foot-pounds
C. ? 281 foot-pounds
D. ? 162.25 foot-pounds
Answer: C
Mathematics
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Find an equation in slope-intercept form of the line satisfying the specified conditions.Through (-7, -5), perpendicular to -9x + 2y = 73
A. y = 
x - 
B. y = - 
x - 
C. y = - 
x - 
D. y = - 
x - 
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
Rotate the axes so that the new equation contains no xy-term. Graph the new equation.31x2 + 10
xy + 21y2 -144 = 0
A. 
B. 
Mathematics
By graphing the function, visually estimate its domain and range.f(x) = 
A. Domain: [0, ?); range: [0, ?) B. Domain: [2, ?); range: [2, ?) C. Domain: [2, ?); range: (0, ?) D. Domain: [0, ?); range = [2, ?)
Mathematics