Answer:
I would have to guess heart rate monitor
See, if you don't brush your teeth regularly, they will rot and your teeth are so close to your brain that it won't make your brain feel any good at all! It can cause a lot of diseases!
Answer:
b=2h-7
Area of a triangle: A=1/2 of bh
replace b with 2h-7: A=(1/2)(2h-7)h=102 => (2h-7)h=204
2h^2-7h-204=0
factor or use quadratic function to solve
h=12
b=2*-7=17
Explanation: