Calculate the expected

gain or loss for Stock MNO.

Lose $25 Gain $5 Gain $45

Stock ABC 40% 15% 45%

Stock JKL 15% | 65% 20%

Stock MNO 5% 80% 15%

Answer

should be 9.5

Step-by-step explanation:

1) so use the expected value formula.

2) -25 ( lose 25 thing) times 5% plus 5 (gain 5) times 80% plus 45 (gain 45) times 15%.

3) put that into you calculator and you have you answer

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

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°