### Instruction: If $7 - 4x = 15$, what is the value of $8x + 2$?### Response: To find the value of $8x + 2$, I need to first solve for $x$ in the equation $7 - 4x = 15$.
I can do this by subtracting $7$ from both sides, which gives me $-4x = 8$.
Then, I can divide both sides by $-4$ to get $x = -2$.
Now that I know $x = -2$, I can substitute it into the expression $8x + 2$.
This gives me $8(-2) + 2 = -16 + 2 = -14$.