alcula el dominio de \( f(x)=x^{2}-3 x \) \( (-\infty) \)

1. Which of the following is the BEST way to buy healthy food on a budget? buy healthy foods every other week only drive to different supermarkets to examine quality of food cut coupons and compare prices eat minimal amounts of the expensive stuff

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

3) \( h(x)=-x^{2} \)

W 2. Which of the following is NOT a common barrier to health and physical activity? education finances age

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