Question

if x = 3, solve for y.
y = 2·3^x
first plug in the value of x into the equation.
y = 2·3?

Explanation:

Step1: Substitute x value

Substitute $x = 3$ into $y=2\cdot3^{x}$, so $y = 2\cdot3^{3}$.

Step2: Calculate $3^{3}$

$3^{3}=3\times3\times3 = 27$.

Step3: Calculate y

$y=2\times27=54$.

Answer:

54