Use positive rational exponents to rewrite the expression. Assume variables are positive.
A. (y + 1)5/2
B. (y + 1)3/10
C. (y + 1)7/10
D. 
Answer: B
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Use the method of variation of parameters to solve the differential equation.y'' + y = sec x tan x
A. y = C1 cos x + C2 sin x - sin x(x + tan x) + sin x ln|csc x| B. y = C1 cos x + C2 sin x + sin x(x - tan x) + cos x ln|sec x| C. y = C1 cos x + C2 sin x + cos x(x - tan x) + sin x ln|sec x| D. y = C1 cos x + C2 sin x + cos x(x - tan x) + cos x ln|sec x|
Find an equation for the parabola described.Vertex at (2, 8); focus at (2, 3)
A. (y - 8)2 = 4(x - 2) B. (x - 2)2 = 20(y - 8) C. (y - 8)2 = -4(x - 2) D. (x - 2)2 = -20(y - 8)
Solve the problem. Round to the nearest cent or tenth of a percent.Original price $1286.00; markdown $411.52. Find the reduced price and the rate of the markdown.
A. Reduced (new) price = $1697.52 Rate of markdown = 32% B. Reduced (new) price = $874.48 Rate of markdown = 68% C. Reduced (new) price = $874.48 Rate of markdown = 32% D. Reduced (new) price = $411.52 Rate of markdown = 68%
Arrange the numbers from smallest to largest.-7.7, -7
, -9, -7.6
A. -9, -7.7, -7.6, -7
B. -7
, -7.6, -7.7, -9
C. -9, -7.6, -7
, -7.7
D. -7
, -9, -7.6, -7.7