Answer:
At price 3 and 11, the profit will be $0
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one.
<em>
A certain companies main source of income is a mobile app. The companies annual profit (in millions of dollars) as a function of the app’s price (in dollars) is modeled by P(x)=-2(x-3)(x-11) which app prices will result in $0 annual profit?</em>
My answer:
Given:
- x is the app price
- P(x) is the profit earned
If we want to find out the app price that will result in $0 annual profit? It means we need to set the function:
P(x)=-2(x-3)(x-11) = 0
<=> (x-3)(x-11)= 0
<=> x - 3 = 0 or x - 11=0
<=> x = 3 or x = 11
So at price 3 and 11, the profit will be $0
Hope it will find you well.
I believe the answer is D
Answer:
C≈402.12in
Step-by-step explanation:
The circumference of a circle is equal to pi times the diameter. The diameter is two times the radius, so the equation for the circumference of a circle using the radius is two times pi times the radius
Answer:
The equation of the cost is C = 50h + 15
Step-by-step explanation:
The form of the linear equation is y = m x + b, where
- m is the slope of the line ⇒ rate of change
- b is the y-intercept ⇒ constant value
∵ A plumber charges 15 per service call
→ That means there is a fixed amount of 15
∵ b is the constant amount
∴ b = 15
∵ It charges 50 per hour
→ That means, the rate of change is 50
∵ m is the rate of change
∴ m = 50
∵ C is the cost for h hours
→ Replace y by C and x by h in the form of the linear equation above
∴ C = m h + b
→ Substitute the values of m and b in the equation
∵ C = 50h + 15
∴ The equation of the cost is C = 50h + 15