(0, 2 )
to find the y-intercept, let x = 0 in the equation
x = 0 , then 10y = 20 ⇒ y = 2 ← ( y- intercept ) ⇔ (0, 2 )
Answer:
2/5, 1/2, 6/10
Step-by-step explanation:
did problem
Given from the question
Vertex
(h,k) = <span>(500, 15900)
One of the points on the graph
(x,y) = (0,8400)
FIRST PART: Find the quadratic function
We can find the quadratic function by this formula
y = a (x - h)</span>² + k
Input the numbers to the formula, to find the value of a
y = a (x - h)² + k
8400 = a(0 - 500)² + 15900
8400 = a (500)² + 15900
8400 = 250000a + 15900
-250000a = 15900 - 8400
-250000a = 7500
a = 7500/-250000
a = 0.03
Submit a to the formula
y = a (x - h)² + k
y = 0.03 (x - 500)² + 15900
<em>(This is the quadratic function)
</em>SECOND PART: Find the linear function
<em />the total cost = cost each helmet × the number of helmet
y = 26x
SO, THE ANSWER IS OPTION B
Answer:
the answer is 20% increase I used a calculator but you should be able to do that math by taking 40 dividing by five where that ends up being 8 that is 20 percent of 40 so adding that back to the original amount is a 20 percent increase hope this helps
Step-by-step explanation:
Step-by-step explanation:
U = (x - 5)
V = y^3
because we follow the rule
(U+V)^2 = U^2 + 2UV + V^2
factor the expression will be