SAT Math Question

Anonymous
timer Asked: Oct 18th, 2018
account_balance_wallet $5

Question Description

Please answer the question in the attached document

This is a math question for the SATs

SAT Math Question
screen_shot_2018_10_18_at_12.11.59_pm.png

Tutor Answer

Borys_S
School: New York University

The solution is ready, please ask if something is unclear.docx and pdf files are identical

(๐‘Ž๐‘ฅ + 2)(๐‘๐‘ฅ + 7) = 15๐‘ฅ 2 + ๐‘๐‘ฅ + 14 for all ๐‘ฅ, and ๐‘Ž + ๐‘ = 8. Find ๐‘.

Open the parentheses:
๐‘Ž๐‘๐‘ฅ 2 + 2๐‘๐‘ฅ + 7๐‘Ž๐‘ฅ + 14 = 15๐‘ฅ 2 + ๐‘๐‘ฅ + 14,
so
(๐‘Ž๐‘ โˆ’ 15)๐‘ฅ 2 + (2๐‘ + 7๐‘Ž โˆ’ ๐‘)๐‘ฅ = 0
for all values of ๐‘ฅ.

Of course, this means that the coefficients near each ๐‘ฅ ๐‘› are zero.
The coefficient at ๐‘ฅ 0 (the constant ter...

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Review

Anonymous
Tutor went the extra mile to help me with this essay. Citations were a bit shaky but I appreciated how well he handled APA styles and how ok he was to change them even though I didnt specify. Got a B+ which is believable and acceptable.

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