Solve for x.e4x2 + e(2x)2 = 6
A. x = ±
B. x = 
ln 
C. x = ±
D. x = ±
Answer: D
Mathematics
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Solve the problem.The perimeter of a rectangle is six times the width. If the length were increased by 4 inches and the width by 7 inches, the perimeter would be 160 inches. What is the width?
A. 69 in. B. 46 in. C. 23 in. D. 138 in.
Mathematics
Complete the equation so the result is an identity. 1 + 
= csc2x
A. cos2x B. sin2x C. cot2x D. sec2x
Mathematics
Solve the system by graphing.3x + 2y = 28-2x + 3y = 16
A. (8, 4) B. (3, 22) C. (4, 8) D. No solution
Mathematics
Find the inverse of the function.f(x) = x2 - 4, x ? 0
A. f-1(x) = - 
B. f-1(x) = - 
C. f-1(x) = x2 + 4
D. f-1(x) = 
Mathematics