Mr. Tank has an old gas water heater that cost him $685/year to operate. He purchased a new one for $1875 that will save him 33.87% annually and energy cost to run in how many years will the new water heater pay for itself? Round to the nearest whole year

8 years

Step-by-step explanation:

Given

Old water heater cost per year

New Heater cost and save 33.87%

So New heater cost Annually

New heater cost

Saving per year

So it will pay for itself after

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°

i’m sorry but i don’t know sorry