Example 1
Example 1
Evaluate:
4y – 7
when y = -4
Answer
4 * -4 – 7
= -23
Example 2
Example 2
Evaluate:
7 – p
when p = -8
Answer
7 – -8
= 15
Example 3
Example 3
If a=2, b=-5, c=1/2 what is:
I) ab
II) b/a
III) 3c²
IV) (3c)²
Answers
I) -10
II) -2.5
III) 3 x (0.5 x 0.5) = 0.75
IV) (3 x 0.5) x (3 x 0.5) = 2.25