Answer:
(3, 0 )
Step-by-step explanation:
Given a parabola in standard form
y = ax² + bx + c (a ≠ 0 )
Then the x- coordinate of the vertex is
= - 
y = 5x² - 30x + 45 ← is in standard form
with a = 5, b = - 30 , then
= - 
= 3
Substitute x = 3 into the function for corresponding value of y
y = 5(3)² - 30(3) + 45 = 45 - 90 + 45 = 0
vertex = (3, 0 )
Answer:
What part do u need help with?
Step-by-step explanation: kaknckndnkcksnjkjs
Answer:
Did you mean (-3, 7) for the first point?? If so, the answer is
D) y = -2/3x + 5
Step-by-step explanation:
Find the slope: (m)
3-7 / 3+3 = -4/6=-2/3=m
Find the y intercept (b): (plug in y, x, and m)
3=-2/3(3) +b
3=-2+b
5=b
Write equation using y=mx+b
y = -2/3x+5
in order to find a point on the line assume that the line cuts the y-intercept at x=0 then subsitute this value on the equation to get the value of of y at this point x=0
The applicable relation is
... selling price = cost + markup
You have not said what the base is for the markup percentage. If markup is 75% of the cost, then we have
... markup = 0.75×cost
... cost = markup/0.75 = 3237.50/0.75 = 4316.67
Then the selling price is
... selling price = $4316.67 +$3237.50 = $7,554.17
_____
If the markup is 75% of the selling price, then we have
... markup = 0.75×selling price
... selling price = markup/0.75 = $3237.50/0.75 = $4,316.67
