Answer:
Direct Variation Use y=kx. Means “y varies directly with x.” k is called the constant of variation. “y varies inversely with x.” k is the constant of variation.
Step-by-step explanation:
Answer:
after nine days the total will be 2,430 mile
Step-by-step explanation:
258x9=2322
12x9=108
2322+108=2430
It’s 32 because 4/5ths of 40 is 32
Figure 1
n=1→f(n)=f(1)=1
Options 2 or 3
Figure 2
n=2→f(n)=f(2)=5
With Option 2:
f(n)=f(n-1)+2n
n=2→f(2)=f(2-1)+2(2)
f(2)=f(1)+4=1+4→f(2)=5 ok
With Option 3
f(n)=f(n-1)+n
n=2→f(2)=f(2-1)+2
f(2)=f(1)+2=1+2→f(2)=3 No
Answer: Second option: f(1)=1; f(n)=f(n-1)+2n; for n>=2
