Plz fast asap

the length of a bookshelf is 5 ft. the length of a model of this bookshelf is 3 ft. find the scale factor of the model to the bookshelf.

2÷6+1/2 to the second power plus one

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

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.