Simplify 6x 6 5x - 8. 11x - 2 11x 2 9x user: simplify 9 - {x - (7 x)}. 16 -2x 2 -2x 16 2x 2

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

Which answer is the solution set to the inequality |x|< 9? a. x< -9 or x> 9 b. x> -9 and x< 9 c. x> -9 or x< 9 d. x< 9 and x< 9

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.