Combining Like Terms
3x - 7x
-4x
A toy cost $21.21. The tax is 7.5 percent. What is the cost of the toy?
$22.80
78 - 23
78 + -23
1/2(10 - 6)
2
-8(6 + (-5))
-8
2x - 7x + 8
-5x + 8
A man sold $3,456 worth of products. He earns 4.3% commission. What did the man earn?
$148.61
-7/9 - (-2/7)
-7/9 + (2/7)
At 3pm the temperature is 6 degrees. Six hours later the temperature is -19 degrees. What expression represents the difference in temperatures? Use absolute value!
|6 - -19|
-1/2(3x - 8)
-1.5x + 4
5 + 4x - 6x - 4
-2x + 1
What is the simple interest on a loan for $2,930 for 5 years at 3.4%?
$498.10
(7x + 6) - (6x - 9)
x + 15
-15 - 6
-21
Rewrite don't combine the constants
7(x - 9) + 7
7x - 63 + 7
-(5x - 9) + x - 7
-4x + 2
A toy cost $56.21 and was on sale for $43.21. What is the percent decrease?
23%
A woman makes a profit of $.34 for selling dolls or toy cars. Write an expression for the total profit dolls (a) and cars (b).
.34(a + b)
1/2(1 1/5) + 3/4 divided by 7/8
51/35 or 1 16/35
Mr. Palmer notices the temperature outside is -8 degrees. An hour later the temperature is 17 degrees. Write the equation without absolute value.
17 - (-8) = 25
-1/2(3x - 6) + 8x - 4
6.5x - 1
A toy cost $21.21. It is marked down 12% and the tax is 7.5%. What is the total price of the toy?
$20.05
3x - 8(x + 3) - 6(x - 7)
-11x + 18
2/3 + 4(1/4 - 2/3) + 3/4
-1/4
A toy has a 20% markdown. If the price is represented by x, then how much does the toy cost?
.80x