Decrease 18 tonnes by 30%

Use the knowledge of x- and y- intercepts to choose the correct graph of the equation 3x+6y=6

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

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.