Yes, I will list acute first (<90) and obtuse second (>90) and they need to add to 180
10 and 170
20 and 160
30 and 150
40 and 140
50 and 130
60 and 120
70 and 110
80 and 100 and so on
Answer: The expression is 7/2.
0.5 x 4 = 2 feet / 2 feet in 4 seconds
15 - 2 = 13
New depth: 13 feet
0.4 x 3 = 1.2 feet / 1.2 feet in 3 seconds
13 - 1.2 = 11.8
New depth: 11.8 feet
Since we can find that the graphs Y value is by a factor of 2 looking at the graph we can find
f(3)=8
1/5 because 1/5+2/5+1/5=4/5 and out of a whole which would be 5/5, you would subtract 4/5 from 5/5
