# Tutor profile: Will A.

## Questions

### Subject: SAT

Make the necessary grammatical corrections to the following sentence: "Isabelle and me walked to the beach for one simple reason; to see if their are any seagulls flying around."

"Isabelle and I walked to the beach for one simple reason: to see if there were any seagulls flying around." There are four corrections that need to be made to the sentence given in this question. First, in order for the subject of the sentence to agree with the verb "walked," "Isabelle and me" must be changed to "Isabelle and I." "Me walked" is grammatically incorrect because "me" is in objective form and this situation calls for a subjective noun. Second, the semicolon must be changed to a colon since the clause following it is dependent, and semicolons can only be used to connect two independent clauses but colons can be followed by an independent or dependent clause. Third, "their" is a possessive pronoun and does not make sense in this context, so it must be changed to the correct spelling ("there"). Finally, in order for the tense of the second clause to agree with the tense of the first, "are" must be changed to "were" because the first clause is in the past tense (as indicated by the word "walked").

### Subject: World Geography

According to the global wind patterns of the Trade Winds and Westerlies, if someone standing in Madagascar's capital city of Antananarivo (latitude: approximately 19 degrees south) let go of an indestructible balloon, what country will it most likely pass over first?

Mozambique Since Antananarivo is between latitudes 0 and 30 degrees south, the Trade Winds pass over the region. The Trade Winds blow to the west, which means that according to global wind patterns, the balloon will most likely pass over Mozambique first since it is the country directly to the west of Madagascar.

### Subject: Algebra

John wants to buy a soda from a peculiar vending machine near his house. The machine only takes coins, and it will only let John choose his $3.20 soda after he puts 16 coins in the machine. If he has 15 nickels and 18 quarters in his pocket, how many of each coin will he put in the machine?

4 Nickles and 12 Quarters This question is an Algebra/System of Equations question. Our first step is to set up equations that summarize the information given to us in the question. We can define N as the number of nickles he puts into the machine and Q as the number of quarters he puts in the machine. Since we know the total number of coins that John should put into the machine and the total amount of money he should put into the machine, we know that we need to create two equations. Our first equation, which represents the number of coins he puts into the machine, can be written as N+Q=16 since we know that the sum of the number of quarters and nickles he puts into the machine should equal 16 (because the machine needs to receive 16 coins before it gives John his soda). Our second equation, which represents the amount of money he puts into the machine, can be written as 0.05*N+0.25*Q=3.20 because we know that each nickel is worth $0.05 and each quarter is worth $0.25, and the total value of all of the coins that he puts into the machine should be $3.20 (because the soda costs $3.20). After setting up our equations, we can use algebra in the first equation to determine that Q=12-N. We can then plug in 12-N for Q in the second equation. Next, we can use algebra to solve for N in the second equation and determine that John will put in 4 nickles. Finally, we can substitute 4 for N in the first equation, and then use algebra to determine that he will put in 12 quarters.

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