We the problems below. Be sure to show your thinking. b. Erin weighs 135 pounds and is gaining \( \frac{1}{2} \) pound each week. Miranda weighs 143 pounds lat it will take until the two girls weigh the same amount?

\[ y=x^{2}+8 x+18 \] Write your answer as an inequality using \( x \) or \( y \) as appropriate. Or, you may instead click on "Empty set" or "All reals" as the answer

\[ y=-3 x^{2}+12 x-15 \] Write your answer as an inequality using \( x \) or \( y \) as appropriate. Or, you may instead click on "Empty set" or "All reals" as the answer.

\( x y+8=24 \quad \) where \( y=2 \)

1) \( (3 x)\left(2 x^{2}\right) \) 4) \( \left(x^{3}\right)\left(x^{2}+x\right)\left(3 x^{3}\right) \) 7) \( \left(x^{4}+3 x^{3}+2 x^{2}+11 x\right)\left(x^{3}\right) \)

Find the range of the quadratic function.