Factor.y2 - 4
A. (y + 2)(y - 2)
B. (y - 2)(y - 2)
C. (y + 4)(y - 4)
D. (y2 + 2)(y2 - 2)
Answer: A
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Simplify.
A.
B.
C.
D.
Solve using Cramer's Rule.Two different gasohol mixtures are available. One contains 5% alcohol and the other 12% alcohol. How much of each should be mixed to obtain 1000 gallons of gasohol containing 10% alcohol?
A. 417 gal 5%, 583 gal 12% B. 50 gal 5%, 120 gal 12% C. 714 gal 5%, 714 gal 12% D. 286 gal 5%, 714 gal 12%
Write an equation in slope-intercept form of a line satisfying the given conditions.m = - ; b =
A. y = x -
B. y = - x +
C. y = - x -
D. y = x +
For the given amounts A and B, find the requested percent of change. Round to the nearest whole percent if necessary.A = 420, B = 70Find the percent change if B changes to A.
A. 600% B. -600% C. 500% D. -500%