Answer:
80% increase
Step-by-step explanation:
45 - 25 = 20
20/25 = 0.8
0.8 X 100 = 80
Y=mx+c
y=7/18x+c
now we will find the value of c
20=7/18*4+c
20=28/18+c
20=14/9+c
20-14/9=c
180-14/9=c
18.4=c
so the equation is y=7/18x+18.4
Use the half angle identity, tan157.5=(1-cos315)/sin315
cos315=cos(-45)=√2/2, sin315=-√2/2
tan157.5=(1-√2/2)/(-√2/2)=(2-√2)/(-√2)=(2√2-2)/(-2)=1-√2
I just looked it up and it said it is 180
I think 10.5 is the right answer.