Evaluate the expression15x+4 for x= -1.5

1 answer

To evaluate the expression \( 15x + 4 \) for \( x = -1.5 \), we substitute \(-1.5\) for \(x\):

\[ 15(-1.5) + 4 \]

Calculating \( 15 \times -1.5 \):

\[ 15 \times -1.5 = -22.5 \]

Now, substitute this value back into the expression:

\[ -22.5 + 4 \]

Now perform the addition:

\[ -22.5 + 4 = -18.5 \]

Thus, the value of the expression \( 15x + 4 \) when \( x = -1.5 \) is \(\boxed{-18.5}\).