Answer:
y=21
Step-by-step explanation:
y= 9 cos x =3 so y=3 when x=1 on the base level so if x=7 would be x=1 on the base level * 7 then y=3 on the base level * 7 would be y = 21
I think the answer is A
I'm not sure tho
93 fluid ounce
Answer:(x^5−4) and (x^10+4x^5+16)