1. In the space provided, list the chemical formula(s) of compou 2. In the space provided, list the chemical formula(s) of ions.

b). Confirm that \( \phi \) is a porential furetion for \( \hat{F}(z) \) on some region, and state the region. \( \begin{aligned} \phi(x, y, z)= & x \sin z+y \sin x+z \sin y . \\ z(x, y, z)= & (\sin z+y \cos x) i \\ & +(\sin x+z \cos y) j \\ & +(\sin y+x \cos z) k .\end{aligned} \)

Let \( f(x)=\frac{14 x^{4}+a x^{2}+b}{7 x^{4}+c x^{2}+d} \), where \( a, b, c \), and \( d \) are unknown constants. Which of the following is a possible graph of \( y=f(x) \) ? Dashed lines indicate asymptotes.

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Solve for \( d \) \[ -8 d+11 d=9 \] \( d= \)

Solve for \( d \) \[ 7=\frac{d+20}{6} \] \( d= \)