answer Y=1 over 4 and Y= 2 over 3 that is your answer and these are the steps I'm going to put a image hope this is useful to u and have a beuty day
hello
step 1,
convert the hour time to minute
![\frac{1}{10}h=\frac{60\min s}{10}=6\min s](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B10%7Dh%3D%5Cfrac%7B60%5Cmin%20s%7D%7B10%7D%3D6%5Cmin%20s)
step 2
find the rate
4 toys * 4 months = 16
16 toys + 3 toys he started with =19
19 toys
K=2.35. You are correct.
Have a nice day! :)
You need to use the identity
cos(90-u)=sin(u)
if u=x-20
cos(90-x+20)=sin(x-20)
cos(110-x)=sin(x-20)
substituting in the original function
cos(110-x)=cos(42)
for the functions to be equal there input must be equal
110-x=42
x=68