The 1st row has 15 chairs.
The 2nd row has 15 + 3 = 18 chairs.
The 3rd row has 18 + 3 = 15 + 2•3 = 21 chairs.
The 4th row has 21 + 3 = 15 + 3•3 = 24 chairs.
The pattern continues, so that the n-th row has 15 + (n - 1)•3 = 3n + 12 chairs.
If there are 15 rows, then the total number of chairs is
where we use the formulas
Data given:
Robbie: 15% more than Rebecca:220 movies, which is 10% more than Joshua
Robbie=?
Joshua=?
Solution:
Robbie:
220+(220/10+220/5)=220+(22+11)=253 movies
Joshua:
220-(220/10)=220-22=198 movies
Answer: C. A sense that the speaker feels out of place in 1950s America
Explanation: