Please help I am terrible at algebra

The price that will maximize the revenue = $10

The maximum revenue = $13,500

Step-by-step explanation:

Given that ⇒ R = -15 p² + 300 p + 12,000

At the maximum revenue

Solve for p

∴ -30p +300 = 0

-30 p = -300

p = -300/-30 = 10

So, R = -15 * 10² + 300 * 10 + 12,000 = $13,500

So, The price that will maximize the revenue = $10

and the maximum revenue = $13,500

answer: 20

step-by-step explanation:

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°