If (x + 1/x)^2 =9, then (x-1/x)^2=

A) 3
B) 5
C) 7
D 9

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

Twenty-five percent of the customers entering a grocery store between 5 p. m. and 7 p. m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.