A telephone company offers service for a monthly fee of $35 in a charge of $.21 per minute of talking. If M represents the number of minutes a person talks in a month and C is the total monthly charge which of these is the correct relationship between M and C

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.