Solve the problem.Find the average rate of change. Use appropriate units.Minutes Cellular Phone is Used

A. $0.40 per minute
B. $-2.40 per minute
C. $0.90 per minute
D. $-0.42 per minute


Answer: D

Mathematics

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Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with vertices (±8, 0) and foci at (±3, 0)

A.  +  = 1
B.  +  = 1
C.  +  = 1
D.  +  = 1

Mathematics

Find the product.(10x - 9y)2

A. 100x2 + 81y2 B. 10x2 + 81y2 C. 10x2 - 180xy + 81y2 D. 100x2 - 180xy + 81y2

Mathematics

Write the numeral as a numeral in base five.CMXXXII

A. 14012five B. 932five C. 12212five D. 1132five

Mathematics

Solve the equation.-28 = a - 25

A. 3 B. -3 C. 53 D. -53

Mathematics