When the input is x=0.3, which of the following is the output of the function y=3x+6?

Question

6.3
6.3

9
9

6.9
6.9

0.3

Answer 1

To find the output of the function \( y = 3x + 6 \) when \( x = 0.3 \), we can substitute \( x \) with \( 0.3 \) in the equation:

\[ y = 3(0.3) + 6 \]

Calculating this step-by-step:

1. Multiply \( 3 \) by \( 0.3 \): \[ 3 \times 0.3 = 0.9 \]

2. Add \( 6 \) to \( 0.9 \): \[ 0.9 + 6 = 6.9 \]

Thus, when \( x = 0.3 \), the output \( y \) is \( 6.9 \).

So the correct answer is 6.9.