A cellphone company charges $45 for unlimited calls and $0.25 per text message. Another cellphone company charges $0.15 per text message and $70 for unlimited calls. Write an equation to represent when the cost from both companies will be the same. 4.

you first start by making your equation: 45 +.25x = 70 +.15x. then subtract. 15x from both sides. it should look like 45 +.10x = 70. subtract 45 from both sides then you get. 10x = 25. divide 10 to both sides and you get 250. so the two companies will be the same amount