The first step is finding how much the metro cost to ride monthly since its a monthly pass. If she rides 16 times for 6.30 every time then you multiply them you should get 100.8. now subtract the original cost before the monthly pass to after. you should get 22.8
X^2+8x+15 is the area
because x+5 = length
and x +3 = width
(x+5)(x+3) =
x^2+3x+5x+15 =
x^2+8x+15 (area)
The roots of a polynomial are the values that render the polynomial to zero
y=(x+4)(x-2)^2(x+7)
in the 1st parenthesis, x=-4 render the polynomial =0
in the 2nd parenthesis, x=2 render the polynomial =0
in the 3rd parenthesis, x=-7 render the polynomial =0
So there are 3 values as roots of this polynomial (answer C)
It's a scalene triangle, a triangle where all of the sides are different lengths.
