Find the derivative of y.y = ln (sinh 2x)
A. 
B. 2 csch 2x
C. 2 coth 2x
D. coth 2x
Answer: C
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Multiply. Assume that all variables represent nonnegative real numbers.
A. 3 
- 4 
B. 3 
+ 11 
+ 4 
C. 3 
- 11 
+ 4 
D. 3 
+ 11 
- 4 
Find the standard form of the equation of the parabola using the information given.Focus: (-7, 3); Directrix: x = 3
A. (x + 2)2 = -20(y - 3) B. (x - 3)2 = -20(y + 2) C. (y - 3)2 = -20(x + 2) D. (y + 2)2 = -20(x - 3)
Work the chain multiplication.0 × 3 × 4
A. 0 B. 7 C. 18 D. 12
Solve the problem.Leah has $289 in her checking account. She later deposits a check for $70 but has to withdraw $28 for groceries the next day. She then writes a $59 check for car repairs. How much money is left in Leah's checking account after the car repair check is cashed?
A. -$132 B. $132 C. -$272 D. $272