Answer: Choice C
The equation is y = 4x-3
---------------------------------------
How I got that answer:
The first row has x = 0 and y = -3
So the answer is narrowed to either A or C. These answer choices have a y intercept of -3. Choices B and D have a y intercept of 3.
We need the slope now. Pick any two points from the table. I'm going to pick (0,-3) and (2,5) from the first two rows.
Slope formula:
m = (y2-y1)/(x2-x1)
m = (5-(-3))/(2-0)
m = (5+3)/(2-0)
m = 8/2
m = 4
The slope is 4, so the equation is y = 4x-3
That's why the answer is choice C
(we can rule out choice A as that slope is 1)
Answer: 0.14583333333
Step-by-step explanation:
Answer:
$2 per pound.
Step-by-step explanation:
Answer:
20%
Step-by-step explanation:
Find the difference of both prices.
150 - 120 = 30
Calculate the ratio of the decrease in price to the original price.
30/150 = 0.2
Multiply the decimal by 100 to get your percentage.
0.2(100) = 20