1. Sam drove to the beach, 160 miles from his home, at 40 miles per hour. He drove home the next day at 20 miles per hour. Calcu
1 answer:
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Answer:
f(n) = f(n - 1) + 3
Step-by-step explanation:
Substitute to get the recursive formula.
OPTION 1: f(n) = f(n - 1) + 3
Substituting n = 1.
f(1) = f(1 - 1) + 3 = 0 + 3 = 3.
Substituting n = 2.
f(2) = f(2 - 1) + 3 = f(1) + 3 = 3 + 3 = 6.
Substituting n = 3.
f(3) = f(3 - 1) + 3 = f(2) + 3 = 6 + 3 = 9.
The numbers match the given sequence. So, we say the above recursive formula represents the sequence.
OPTION 2: f(n) = f(n - 1) + 2
Substituting n = 1
f(1) = f(0) + 2 3.
So, this is eliminated.
Similarly, OPTION 3 and OPTION 4 can be eliminated as well.
Answer:
Step-by-step explanation:
Simplifying the fraction by multiplying d into the (n-1) term,
Simplifying the fraction by multiplying 2 throughout,
Multiply on both sides
Cancel the on the right hand side
Multiply s to the terms,
Move to the right hand side by subtracting
on both sides
On the right hand side of the equation, take out
Divide Left hand side by ,