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Substitute a value
Transcript
Substitute a value
Review
Review 1
Try the problems yourself before you check your answers!
Answers
a. x + 12
b. 14x + 5
c. x2 - 18
Answers
Review 2
Try each problem before looking at the answers!
Answers
(there are more than one way)
Answers
a. six plus two times a number
b. Twelve minus a number
c. Nine times the sum of a number and one
Follow along!
When we create expressions, we can also evaluate them.
Evaluate means finding the value of the expression.
We do that by substituting a value which means
replacing the variable with the number.
Example 1
Example 1
Replace every x with the
number 7! MUST SHOW WORK
Example1
Hint
Answers
A. 17
B. 12
C. 28
D. -45
E. 38
Example 2
Example 2
Answers
https://youtu.be/jJ_9YRkdN4g
Answers
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