Question

5x - 20 when
c) x = 16
d)

Explanation:

Step1: Substitute x = 16 into the expression

We have the expression \(5x - 20\), and we need to replace \(x\) with 16. So we get \(5\times16 - 20\).

Step2: Calculate the multiplication first

According to the order of operations (PEMDAS/BODMAS), we do the multiplication first. \(5\times16 = 80\). Now the expression becomes \(80 - 20\).

Step3: Calculate the subtraction

Subtract 20 from 80: \(80 - 20 = 60\).

Answer:

60