The value of y varies directly with x. If x= 3, then y= 21. What is the value of xwhen y= 105

The tile along the edge of a triangular community pool needs to be replaced? ?

Sole the equation 6n + 9 = -3n - 21 - 6 for n

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.