Taylor is taking a 10-question multiple choice quiz. Assuming there are 4 choices per question and he answers every question, find the following probabilities:
a. P(Taylor gets exactly 8 questions correct)
b. P(Taylor gets at least 9 correct)

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6

Javier bought a painting for $150. each year, the painting's value increases by a factor of 1.15. which expression gives the painting's value after 77 years?