Answer:
The value of given expression for x=100 is 820.
He should substitute the value of x in the given expression instead of equating it to 100.
Step-by-step explanation:
The given expression is
[tex]5x+3x+20[/tex]
Sam want to evaluate the expression 5x+3x+20 for x = 100.
Substitute x=100 in the given expression.
[tex]5(100)+3(100)+20[/tex]
[tex]500+300+20[/tex]
[tex]820[/tex]
The value of given expression for x=100 is 820.
Sam make his mistake in first step. He equate the given expression to 100.
He should substitute the value of x in the given expression instead of equating it to 100.
