Answer:
88 m
Step-by-step explanation:

= 2 × 22/7 × 14
= 2 × 22 × 2
= 88 m
Answer:
65
Step-by-step explanation:
Answer:
y=18000-2750x
Step-by-step explanation:



Range is the value of y
f(x)=-x²+5
when x=-1, f(x)=-(-1)²+5=4
when x=2, f(x)=-(2)²+5=1
so 1<y≤4
the second piece: f(x)=2x-3
when x=2, f(x)=2(2)-3=1
when x=5, f(x)=2(5)-3=7
so 1≤y<7
union of the two parts of y: 1≤y<7
[1,7) is the answer.