Laura sends an average of 27 text messages per month to each of f friends. her cell phone provider charges her a flat rate of $3.50 per month and $0.04 per text message. the function t(f) gives the total number of text messages laura sends each month to f friends, and g(t) gives the amount laura is charged by her cell phone provider for t text messages. find t(f) and g(t)

Astudent found the solution below for the given inequality. |x-9|< -4 x-9> 4 and x-9< -4 x> 13 and x< 5 which of the following explains whether the student is correct? -the student is completely correct because the student correctly wrote and solved the compound inequality. -the student is partially correct because only one part of the compound inequality is written correctly. -the student is partially correct because the student should have written the statements using “or” instead of “and.” -the student is completely incorrect because there is no solution to this inequality.