The tank holds $16$ gallons and is $\frac{3}{4}$ full:

$\text{Fuel available} = \frac{3}{4} \times 16 = 12 \text{ gallons}$

The car travels $22$ miles per gallon, and Jared needs to drive $231$ miles:

$\text{Fuel used} = \frac{231}{22} = 10.5 \text{ gallons}$

Fuel remaining when he arrives home:

$12 - 10.5 = 1.5 \text{ gallons}$