0.30 multiplied by 29 = 8.7 dollars
X^2-12x+36=90
x^2-12x-64=0
factor: (x-16)(x+4)=0
by the zero product theorem,
x-16=0 or x+4=0
=>
x=16 or x=-4
the least common multiple of 8 and 6 is 24
all you have to do is add 2.09 to itself until it gets to 22.5
2.09 x 10 = 20.9
2.09 x 11 = 22.99
so, 2.09 goes into 22.5 ten times
