4-1 Write and Evaluate Algebraic Expressions
you get $5.25 an hour, how much would you make in 7.5 hours
$39.37
4 people get tickets and spend $20 on gear each. Write an expression to represent it.
4(t-20)
how are properties of operations used to simplify expressions
to combine like terms
rewrite the expressions without parenthesis
13d-(-4d-7
13d+4d+7
How can writing Equivalent Expressions show how quantities are related?
It allows you to view the same situation from different perspectives
10-1/2d
d=6
7
-4(6+2g) choose the equivalent expression
4(2g-6)
-24-8g
24-8g
-24-8g
How do you know when an expression is in its simplistic form
when there are no more like terms
rewrite the expressions without parenthesis
18e-(-4-8e)
18e+4+8e
Simplify
5.5(7.5+x)
41.25+5.5x
draw an expression, if a tank has 40 gallons of water and it is loosing 3/4 gallon per minute, how much is left after m minutes
40-3/4m
choose an equivalent Expressions 3+1/3y-5+2/3y
-2+1y
2+1y
-2-1y
-2+1y
simplify
3.2-5.1n-2n+5
-7.1n+8.2
rewrite the expressions without parenthesis
14m-(5+8m)
14m-5-8m
Choose an equivalent expression to 12x+8
4(2+3x)
8x+12
42+43x
4(2+3x)
A strawberry .38 cents per pound and a mango is .74 cents per pound. How much would it cost for 2 pounds of mango's and 14 pounds of strawberry's.
$6.80
what are equivalent expressions
different expressions that are equal to eachother
simplify
-9+(-1/3y)+5+4/3y
-4+1y
simplify
(50+8m)-(70.50+12m)
36.5
Which is not an equal expression to 48c+12
4(12c+3) or 8(6c-3)
4(12c+3)
how are Algebraic Expressions used to help you solve problems.
They use an unknown variable
choose an equivalent Expressions, x-2y+6
x-2y+6+x
3y-6
1x-6+x
x-2y+6+x
simplify
12+4+2/5j+4/5-5
11+1 1/5j
(36a +2)-(10a+7)
a =47 solve
717
choose an equivalent expression to 2(41+x)
(x+41)2 or 2(41x +2)
(x+41)2