Seven more than twice a number is 13

2x = 7 = 13?

Step-by-step explanation:

I'm not very good at it, but I hope this helps!!! :)

Its 17

Step-by-step explanation:

even more than twice a number is 17. Let's break down this sentence into numbers so you can see what's going on.

"Seven more than twice a number" - This tells you that there is a number, let's call it y, that is 7 more than twice a different number, lets call this x. So in equation form this is y = 7 + 2x. Hmm this seems a little tricky, how do we find the answer? Well if we keep reading, it tells you that the number that is 7 more than twice another number is 17, so we now know that y = 17. So let's redo our equation by substituting y for the number 17:

17 = 7 + 2x

Now we have a workable equation. We need to solve for x. So let's rewrite this equation without changing it, just putting it in different order. Now we have 2x + 7 = 17. So how do we solve for x? First, we subtract 7 from both sides. Remember, when solving for x, anything you do to one side you must do to the other. So now we get this:

2x + 7 = 17  simplifies to 2x = 10

Now if we divide both sides by 2 to get x all by itself, we get x = 5. That is your answer. You can check it by substituting 5 for s in your original equation of 2x + 7 = 17, then you get 2(5) + 7 = 17. It works! Hope this helps!

the function makes a strait line horizontally with no x intercept but a y intercept at 9.

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,