(7+x)+x=15
I did trial and error to get x=4.
8.76582 × 10 to the 3rd power, that's how many hours there are in a year using scientific notation.
The cab rate model for Fwam will be given as y=2.8x+4.
<h3>What is an equation?</h3>
It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
Here we have an equation model for Lamonte y=2.2x+2.5 here y is the total cost and x is the distance in miles.
So here Fwam charges a $4 pick up fee and $2.80 per mile. The equation model will be:-
y=2.8x+4.
Hence cab rate model for Fwam will be given as y=2.8x+4.
To know more about equations follow
brainly.com/question/2972832
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Answer: Yes. When you solve your equations, you're solutions will change a little bit. It's good because it'll give you the right answer.
I hope this helps you and I hope it's right. ☺