Answer:
domain = {0, 1, 2, 3}
range = {0, -1, -2, -3}
Step-by-step explanation:
The function is the set of ordered pairs (0, 0), (1, -1), (2, -2). (3, -3)
The domain is the set of x values. So, domain = {0, 1, 2, 3}
The range is the set of y values. So, range = {0, -1, -2, -3}
My best guess here would be 122.4 since there is no diagram shown above.
Answer: the cost of each pencil is $0.5
the cost of each eraser is $0.15
Step-by-step explanation:
Let x represent the cost of one pencil.
Let y represent the cost of one eraser.
Becky spent $1.45 for 2 pencils and 3 erasers. This means that
2x + 3y = 1.45- - - - - - - - - -1
Luke spent $2.65 for 5 pencils and 1 eraser. This means that
5x + y = 2.65- - - - - - - - - -2
Multiplying equation 1 by 1 and equation 2 by 3, it becomes
2x + 3y = 1.45
15x + 3y = 7.95
Subtracting, it becomes
- 13x = - 6.5
x = - 6.5/- 13
x = 0.5
Substituting x = 0.5 into equation 2, it becomes
5 × 0.5 + y = 2.65
2.5 + y = 2.65
y = 2.65 - 2.5
y = 0.15
Answer:
4,000 meters
Step-by-step explanation:
1 kilometer= 1000 meters
so
4 kilometers = 4000 meters
Answer:
Plan B
Step-by-step explanation:
