In decimal form its 0.64 and in fraction form its 16/25 :) (simplified from 64/100)
Check the picture below.
notice that if we run the "vertical line test", the green vertical line there, touches the graph more than once, and for a function, it has to touch it only once, so no dice.
Remember "SOH CAH TOA"
Sine = (Opposite/Hypotenuse)
Cosine = (Adjacent/Hypotenuse)
Tangent = (Opposite/Adjacent)
In this case, we will be using cosine, and our equation will be 
So firstly, cross-multiply. 
Next, divide both sides by cos(28), and your answer will be 
Answer:
the answer is 84
Step-by-step explanation:
(4(1) +10)+8(5)-10(-3)
4+10+40+30
=84