Replace x in the equation with 3.5 and do the arithmetic.
y = 1.3*3.5 -0.52
y = 4.55 -0.52
y = 4.03
The predicted approximate value of y is 4.03.
The angle must be obtuse.
Since I'm kind of confused about the question, this may not be right. However, the answer I got from the info in the question is 19/60. I'm sorry if it's wrong.
Answer:
1
Step-by-step explanation:
80% = 0.80
0.80 x 5 = 4
5 - 4 = 1