exam Maths Puzzle Numerical Ability

What was the MSRP for a Hummer H1 that sold for $107,272 after an 8% discount

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LATE+WAVE=LATER
AND PROVE V+A+S+E=?
WHERE S=7
NUMBERS ARE IN BETWEEN 0-9
In each of the following settings, give a 95% confidence interval for the coefficients of x1 and x2.
(a) n = 22, y hat = 11.1 + 105x1 + 15.1x2, SEb1 = 7.4 and SEb2 = 4.9.
95% CI