Tammy works as a tutor for PLEASE HELP Tammy works as a tutor for $13 an hour and as a waitress for $8 an hour. This month, she worked a combined total of 91 hours at her two jobs. Let t be the number of hours Tammy worked as a tutor this month. Write an expression for the combined total dollar amount she earned this month.

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.