The number of the product is 9
The intersection is at (2,-1)
<span>if isabel runs 7 miles in 50 minutes, then you know she runs 7/50 miles in one minute, right? So multiply that by the number of minutes she did run, and you can find the distance:
</span><span> 7
------ x 75 =
50
525
------
50
</span><span> If you plug that fraction into your calculator, you get 10.5, so 10 and a half miles.</span>
3c(5+c) -2(3c-7)
15c+3c^2-6c+14
9c+3c^2+14
1.8 is the square root of 3.24