Every time I ask someone answers with something mean or just completely unrelated to what I just asked. I'm failing math so can someone please just give me and answer to this?

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

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°

current in the circuit at time t is /, then the power delivered to the resistor is

step-by-step explanation: