A restaurant has a total of 25 tables. 7 tables seat 6 people, 8 tables seat 5, and 10 tables seat 4. How many can be seated in the restaurant?

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15

Step-by-step explanation:

6+5+4=15

2^y = ln 5, or   y(ln 2) = ln 5.   solving for y,   y = (ln 5) / (ln 2).   y=5

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°