Lisa, beth, and tim painted their grandparent's house. • the amount of time lisa painted can be represented by x. • the amount of time beth painted is 1 3 5 times the amount lisa painted • the amount of time tim painted is 1 2 3 times the amount lisa painted. • the total amount of time lisa, beth, and tim painted is 24 hours. what is x, the amount of time painted by lisa?

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2

For the inequality |c| < |d| to be true, which of the following must be true?

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?