10meters=1000cm
1000-210=890
Mary has 890 centimeters of thread left on the reel.
Answer:
range= y>0 domain is all real numbers
y intercept is 1
<span>x^2+4x-1/(x+2)^2=0
x^2 + 4x - 1 = 0
</span>

;
where a = 1, b = 4 and c = -1
15*6=90 hours
90 *8.25=742.50
Your answer would be $742.50. Hope it helps!