The area of the trapeziod is 337.5
Howwwww.....................
The answer is 125 messages.
Firstly the best thing to do is create two different equations.
1. y=25+.08x
2. y=20+.12x
Then you plug into Desmos and see at what point they cross. They cross at (125, 35).
Therefore for 125 text messages would cost 35$ for each plan.
Answer:
the number is 21
Step-by-step explanation:
(9+x)(4)=120
9+x=30
x=21
