Answer:
39,270 ways.
Step-by-step explanation:
That is the number of permutations of 3 from 35.
35P3 = 35! / (35-3)!
= 35*34*33
= 39270.
To get the total price multiply the cost of the book by 1 + sales tax rate:
7% as a decimal = 0.07
13.50 x 1.07 = $14.45
45 + 32 + 37 = 114
114÷3 = 38
4 total quizzes,
for a 40 average on 4 quizzes she needs 40*4 = 160 total points
for 3 quizzes she has 45 +32 +37 = 114 points
160-114 = 46, she needs at least a 46 on the 4th quiz
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