Identifying Terms, etc.
Identify the terms. 9x+2+8y
9x, 2, 8y
The sum of 7 and 11
7+11
Distribute. 8(1+x)
8+8x
8y+6-4y
4y+6
Evaluate the expression when x=20 and y=4.
y+x
24
Identify the terms, coefficients, constants, and variables.
9x+2+8y
Terms: 9x, 2, 8y
Coefficients: 9, 8
Constants: 2
Variables, x, y
6 more than the product of 8 and a number x.
8x+6
Distribute. 8(6+s)
48+8s
3(7x)
21x
Evaluate the expression when x=20 and y=4.
8y-x
12
Identify the terms, coefficients, constants, and variables.
1+q/4+7q
Terms: 1,
q/4
,7q
Coefficients: 1, 7
Constants: 1
Variables: q
3 fewer than 18.
18-3
9(6+x+2)
9x+72
(21+b)+1
22+b
Evaluate the expression when s=10 and r=3.
4r+2s
22
Identify the terms, coefficients, constants, and variables.
5c^2+7d
Terms: 5c^2, 7d
Coefficients: 5, 7
Constants: none
Variables: c^2, d
To rent a moving truck for the day, it costs $33 plus $1 for each mile drive.
a. Write an expression that represents the cost (in dollars) to rent the truck.
b. You drive the truck 300 miles. How much do you pay?
a. 33+x
b. $333
1/2 (6y-2z)
3y-z
5(n+3)+4n
9n+15
Evaluate the expression when x=4 and y=2.
x^2/y
8
Identify the like terms in the following expression:
18x-2y+4y-6x+x
Like Terms: 18x, -6x, x & -2y, 4y
Five friends share the cost of a dinner equally.
a. Write an expression that represents the cost (in dollars) per person.
b. Test your expression with the total cost of the dinner being $200.
a.
x/5
200/5 = $40/person
1/2 (2n+4+6m)
n+2+3m
3z+14+5z-9
8z+5
Evaluate the expression when x=20, y=4, and z=7.
x-18+2y+z
17