When the son is 8, the father is five times that so 8*5 = 40, difference between their ages is 32
twice as old 32*2 = 64
The father will be 64.
My first guess is 100. If that fails, my second guess is 20.
About 7.5 miles if you divide 45/3 is 15 so divide 15/2 which is 7.5
Yes for when you solve the problem then graph it.
A quadratic equation could yield one of two types of roots: real and imaginary. Rational roots are whole numbers and fractions, whereas imaginary roots are complex numbers incorporating the 'i' symbol. When you say, the equation has one real root, this means that there are actually two roots but same in value. That would be letter (x-3)(x-3) = 0. Its root is x=3.
