160+30x Because you initially start with 160 and 30 feet per second. the 30 feet is the one that's progressing so that's the x.
From the second equation:-
x = 6 - 4y
Substitute this for x in the top equation
Answer:
B.
Step-by-step explanation:
2x²(3x³ - 9x +27)
= 6x^5 - 18x³ + 54
Radius=10 is the largest
then the circumference=30
and the smallest circle is radius=3
