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Rob L.
High school math tutor
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Spanish
TutorMe
Question:

Translate: If I study for the exam, I would receive a good grade.

Rob L.
Answer:

Si yo estudiara para el examen, yo sacaría una buena nota. Explanation: The imperfect subjunctive is used to conjugate the verb "study" because it is used in a hypothetical "if" clause. It is hypothetical because there is doubt or uncertainty that the action will occur. Next, we always use the conditional to conjugate the verb in the next clause because the action has not occurred yet, and it only occurs if a condition is met.

SAT
TutorMe
Question:

If 3x - y = 12, what is the value of (8^x)/(2^y)? A. 2^12 B. 4^4 C. 8^2 D. The value cannot be determined from the information given.

Rob L.
Answer:

First, let's simplify the expression (8^x)/(2^y). Since 8 is a power of 2, the numerator can be expressed as ((2^3)^x). This can be rewritten as 2^3x. Thus, the rewritten expression is (2^3x)/(2^y). This expression can be simplified even more. Since the numerator and denominator share the same base, the expression can be simplified finally to 2^(3x - y). Lastly, substitute 12 for the exponent (3x - y), and the final answer is A. 2^12

Psychology
TutorMe
Question:

What is a vestigial behavior? Identify a set of vestigial behaviors that human beings have.

Rob L.
Answer:

A vestigial behavior is a behavior past down from our ancestor that are functionless today. Many vestigial behaviors are evident in newborns (i.e. rooting, sucking, grasping, Babinski reflex - curling of toes when foot is touched, Moro reflex - arching back and hands in the air).

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