Select all expressions equivalent to -72x+60. A: -12(6x-5)

B: -12(-6x-5)

C: 6(-12x+10)

C: -6(-12x-10)

Help me please!!

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.

Lines a and b are perpendicular. if the slope of line a is 3, what is the slope of line b?

Bob paid $3 less than tim at a local pizza parlor. together they spent $7.80. how much did bob pay for pizza?