Using your approximate y-intercept on the line of best fit, your equation would be y=11/7x + 3.
We find the slope by choosing two points that are on the line:
(9, 18) is easy to spot; and (2, 7) is fairly easy to spot as well. The formula for slope is:
m=y₂-y₁/x₂-x₁
m=7-18/2-9 = -11/-7 = 11/7
Slope intercept form, y=mx+b, has the slope and the y-intercept. Plugging those in we have y=11/7x+3.
X = gym memberships, and y = bottles of water
30x + 7y = 1050.....when x = 28
30(28) + 7y = 1050
840 + 7y = 1050
7y = 1050 - 840
7y = 210
y = 210/7
y = 30....so he would have to sell 30 water bottles
Answer:
1230.88
Step-by-step explanation:
The volume of a cylinder is given by
V = pi r^2 h where r is the radius and h is the height
V = (3.14) * (7)^2 * 8
V = 3.14 * 49*8
V =1230.88
Answer:
2x³ + 3(3x - 4)(x + 1)
Step-by-step explanation:
(2x³ + 7x² + x) + 2(x² - 2x - 6)
2x³ + 7x² + x + 2x² - 4x - 12
2x³ + 9x² - 3x - 12
2x³ + 3(3x² - x - 4)
2x³ +3(3x - 4)(3x + 3)/3
2x³ + (3x - 4)(3x + 3)
2x³ + 3(3x - 4)(x + 1)
