Find an equation for the parabola with vertex at the origin.Through (4, -8), opening downward
A. x = - 
y2
B. y = - 
x2
C. y = 
x2
D. y = - 2x2
Answer: B
Mathematics
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Solve the application.In one year, a baseball player got 129 hits in 356 times at bat. What was his batting average? Give decimal notation to the nearest thousandth.
A. 0.365 B. 0.372 C. 0.342 D. 0.362
Mathematics
Find the length of the line segment.
A. 
B. -3
C. 28
D. 
Mathematics
Use the trigonometric substitution to rewrite the algebraic expression as a trigonometric function of ?, where 
.
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Find the general solution for the differential equation.x 
+ 2y = 7x2 + 12x
A. y = 7x3 + 12x2 + 
B. y = 
+ 4x3 + C
C. y = 
+ 4x + 
D. y = 7x2 + 12x + 
Mathematics