Its question in my test. PLEASE HELP
Original price: $46; Markup: 7.5% what is retail:

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.

Meee i honestly dont know what this question talking about

One cell phone plan charges $20 per month plus $0.15 per minute used. a second cell phone plan charges $35 per month plus $0.10 per minute used. write and solve an equation to find the number of minutes you must talk to have the same cost for both calling plans.