4-1: Write and Evaluate Algebraic Expressions
What is the value of 2/12x when x = 4.5?
- 1.25
What is the Commutative Property?
To switch the order of the numbers.
Simplify
3a (7 + 7b)
21a + 21ab
An area model can be used to represent _____
Distributive property
Simplify
(1/2 + ) + (9y + 2)
5.5 + 9y
What is the value of -4/18 +5 when x = 2.6
The value is 4.42
What expression is equivalent to 5f - 6?
A. 11f
B. 5f + (-6)
C. f
B.
Simplify
58.5m + 7.86m - 38.2
66.36m - 38.2
Simplify
2.6 (y + 3. )
2.6y + 9.1
Simplify
(8.8 + 2y) + (8x + )
13.8 + 8x + 2y
Simply
7.7x + 3.6f when
x = 12.2
f = 5.9
115.18
Use the associative Property to write an equivalent expression of (19 + x) + 8.
x + (19 + 8)
Simplify
8.2n + 3.4s - 2.8 + 7.9n - 3.3s
0.1s + 16.1n - 28
Patric wants to add a box with a width of 3 inches and a length of x. He already has a rectangle with a width of 3 inches and a length of 9.2 inches. What is the combined area?
3x + 27.6
Mark was planting x sunflower seeds in one garden and 32x + 50 sunflower seeds in another garden. How many seeds is Mark planting in all?
33x + 50
Simplify
3.25f - 5.32g + 7a Round to the nearest hundredth.
f = 8
g = 6.8
a = 3.2
12.26
Use the Commutative Property to rewrite 12 + x + 15 + f
A. 15x + 12f
B. 15 + 12 + x + f
C. 12x + 15f
B.
Simplify
6.8z (3.2n + 3z - 2)
42.16z - 13.6
1/3 (6 + 8m + 3.5m)
2 + 3.8m
Simplify
3.5 (21f + 6.8) + (13y + 1.22)
73.5f + 36.8y + 1.22
The depth of a submarine is 56. It ascends at the rate of 2ft per minute. What is the depth after 8 minutes?
-40
Select all the equivalent to 1/4x + 2.
A. 2 + 1/4x
B. 2/8x + 1 + 1
C. 3/8x + 2 - 1
D. 25/100x + 2
A, B and D
Select all equivalent expressions to
8.9x + 5y + 2.5x
A. ll.4z +5y
B. 2.5x + 5y + 8.9x
C. 5y + 8.9y + 2.5x
A and B
Sally wants to add onto her garden. Her original garden was 7.4 feet wide and a length of x. She plans to add 6 feet to the length. She says the problem is 22 + 3. Is she right or wrong. If she is wrong what is the correct answer?
She is wrong,
the correct answer is 7.4x + 44.4
Simplify
16a (9.9c + 7) + 18.1a (5a + 8.3y)
202.5a + 158.4ac + 150.23ay