$$\frac{dy}{dx}=\frac{1}{3}\left(10-y\right)$$

$$\left(-7\right)\cdot\left(+4\right)+\left(-2\right)+15$$

$$7\:+\:2\left(x-1\right)$$

$$\frac{3.29}{44}$$

$$\frac{8}{8}a^2b+\frac{1}{4}a^2b-a^2b$$

$$250-2x^2$$

$$\frac{d^3}{dx^3}\left(x^2lnx\right)$$