Brenna can grow 4 plants with every seed packet. With 2 seed packets, how many total plants can Brenna have in her backyard? (Make sure to show your work.)

Cherie works in retail and her weekly salary includes commission for the amount she sells. the equation s=400+0.15c models the relation between her weekly salary, s, in dollars and the amount of her sales, c, in dollars. interpret the slope of the equation.