Which of these sets of ordered pairs satisfies an exponential equation?
A {(1,-2), (3, -8), 6,-32), (7, -128)}
B {(1, -2), (3, 2), (5, 6), (7, 10)}
C {(1, -1), (2, -8), (3, -27), (4, -64)}
D {(1, -1), (2, 4), (3, -9), (4, -16)}

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Find the value of x to the nearest tenth.