Please help me with the questions I need

Step-by-step explanation:

tan x =opp/adj

x = tan-¹(8/20)

x =21.8 degree

but you are asked to find the angle of elevation so

angle of elevation + 21.8 + 90 = 180 degree basic rule of triangle

angle of elevation=180-90-21.8

angle of elevation=68.2 degree

(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)

76%

step-by-step explanation:

24% are dogs and the remaining is 76% because 100-24=76