Is
Y=2x+7
Y-2x=7
One solultion, many solution or no solution?

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate