Question

Evaluate 3x - 2 when x=7

identify the CONSTANT in the algebraic expression 3x + 7

Write an algebraic expression for the phrase: twelve more than b.

Answer 1

See below

Explanation:

Part 1:

= 3x - 2

Given that x = 7

= 3(7) - 2

= 21 - 2

`\boxed{= \ 19}`

Part 2:

= 3x + 7

3 => Coefficient

x => variable

`\boxed{7 => constant}`

Part 3:

More than => +

So,

The expression is:

= 12 + b

`\rule[225]{225}{2}`

Hope this helped!

~AH1807