Ali and tibor get paid $9 per hour. this week, tibor made an additional $27 in overtime.
a). write and expression that represents the weekly wages of ali and tibor. let a represents the number of hours ali worked this week and let t represent the number of hours tibor worked this week.

b). can you write the expression in another way? if so, give an example. justify your answer.

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)