Answer:
it's C
Step-by-step explanation:
edge 2020
Answer:
790
Step-by-step explanation:
Multiply, Determine the sign and evaluate, Add up everything, multiply everything that's left, by doing everything correctly you should get 790
Answer:
Option A is the correct answer
A.x=2a(b-y)
Step-by-step explanation:
Reason: 2a is not a coefficient of y.
Hope it helps you in your learning process.
Legit way is vertex form
easy way is this
x value of vertex in form
f(x)=ax^2+bx+c is -b/2a
the y value is f(x value of vertex)
so
p(x)=-0.5x^2+40x-300
x value of vertex is -40/(2*-0.5)=-40/-1=40
max profit selling 40 per week
profit would be 500
X - 0.25x = 40
Original price = $53.33