Answer:

Step-by-step explanation:

Answer:
-cos^4(x)
Step-by-step explanation:
Step 1: Use the Pythagorean identity : 1=cos^2(x) + sin^2(x)
1-sin^2(x) = cos^2(x)
-1+sin^2(x) = -cos^2(x)
cos^2(x) (-cos^2(x))
Step 2: Factor out common terms cos^2(x)
cos^2(x) (sin^2(x)-1)
Ans: -cos^4(x)
Answer:
Sodas: 160
Hot Dogs: 80
Step-by-step explanation:
Sodas: s
Hot Dogs: d
s+d=240
s=2d
3d=240
d=80
s=160
1500-125=1,375
so 1375 should be your answer.