7th grade math help me pleasee:)

#2     a) 3*5   b) 5x    c)7*3         d) 3y

#3    a) x+x+x+x             b) y+y+y+y+y           c) c+c

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°