Solve.Roger earned $850. If Roger gave 5% to charity, how much did he give to charity?

A. $4.25
B. $0.425
C. $425.00
D. $42.50


Answer: D

Mathematics

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Find the vertex, focus, and directrix of the parabola. Graph the equation.(y + 1)2 = (x - 3)

A. vertex: (3, -1)
focus: (3, -0.75)
directrix: y = -1.25

B. vertex: (3, -1)
focus: (3.25, -1)
directrix: x = 2.75

C. vertex: (1, -3)
focus: (1.25, -3)
directrix: x = 0.75

D. vertex: (-3, 1)
focus: (-3, 1.25)
directrix: y = 0.75

Mathematics

Use a graphing calculator to determine which expression completes the identity.The expression   ? csc ?is to be the left hand side of an equation that is an identity. Which one of the following four expressions can be used as the right hand side of the equation to complete the identity?

A. sec ? + cos ? B. csc ? - tan ? C. tan2? D. cos ? - 1

Mathematics

Find the sum of the arithmetic sequence.56, 58, 60, 62, ..., 78

A. 80 B. 696 C. 672 D. 804

Mathematics

Find n for the given value of an in the arithmetic sequence.an = 433;  1, 9, 17, . . .

A. n = 57 B. n = 54 C. n = 53 D. n = 55

Mathematics