You have two numbers. The sum of the two numbers is 14. The difference of the two numbers is 4. What are the two numbers.
5 and 9
y = 2
2y + x = 9
y = 2
x = 5 ( 5 , 2 )
3 (2x + 3)
6x + 9
-5y + 35x
5(y + 7x)
3x + 2x + 10
5x + 10
Write an equivalent expression for
x + x + x + x + 20
4x + 20
or
4(x + 5)
Over the Summer two students have been assigned to read a book. Ashley has read 500 pages of her reading assignment, and Genesis has read 460 pages. Ashley reads 20 pages per week for the remainder of the summer, and Genesis reads 30 pages per week for the remainder of the summer. How many weeks, M, will it take before the student read the same number of pages?
W = 4
y = -4x + 2
y = 6x - 8
( 1 , -2 )
X = 1 y = -2
-(3x-5y+17)
-3x + 5y - 17
35x3 + 15x2y2
5x2(7x + 3y)
10x - 5y + 9x
19x - 5y
Write an equivalent expression for
5x2 - 4x + 9x2
x(5x - 4 + 9x)
Eder order 3 hamburgers and 2 orders of fries for a total of $29.50. Ada orders 2 burgers and 3 orders of fries for a total of $23. set up a system of equations to find the cost of a burger and the cost of an order of fries.
H = 8.5
F=2
y = -4x - 11
3x + 7y = -2
( -3 , 1 )
x= -3 y = 1
2(2y + 2x)
4x + 4y
3x2 + 18x + 9
3(x2 + 6x +3)
100x2 - 37y + 15 - 100x + 36y
100x2 - 100x - y + 15
Which of the following is an equivalent expression to
5(x + 4) -(2x + 1)
A: 7x - 21
B: 3x + 19
C: x + 20
B: 3x + 19
Micah and Lorenzo are racing on a track. Micah runs 4 milers per hour and gets a .25 mile head start. Lorenzo runs 0.5 miles per hour faster than Micah. If Lorenzo and Micah run the same distance, how many hours, H, do they run?
H = 0.5
6x + 5y = 4
6x - 7y = -20
( -1 , 2 )
X = -1 y = 2
-20a + 15b + 9x - 15y
6x2y + 14xy2 - 42xy
2xy(3x + 7y - 21)
20x2 + 32 + 14 - 15x
20x2 - 15x + 23
13x - 150
Braulio's Custom Kitchen Supplies sells handmade forks and spoons. It cost the store $2 to buy supplies to make a fork and $3 to buy the supplies to make a spoon. The store sells forks for $5 and spoons for $7. Last April Braulio's Custom Kitchen Supplies spent $12 on materials for forks and spoons. They sold the finished product for a total of $29. How many forks and how many spoons did they make last April?
S = 2
F = 3
4x + 5y = 6
6x - 7y = -20
( 29 , -22 )
x = 29 y = -22
-2(-3x + 11) + 10(4x - 10)
48x - 122
20x8y2z2 + 15x5y3z + 35x3y3z
5x3y2z(4x5z + 3x2 + 7y)
15x6 - 14x5 + 13x4 - 12x3 + 11x2 - 10x + 9 - 8x6 + 7x5 - 6x4 + 5x3 - 4x2 + 3x - 2
7x6 - 7x5 + 7x4 - 7x3 + 7x2 - 7x + 7
5x(20x + 4 + 7y) - 15y
100x2 + 20x + 35xy - 15y