Answer:
z-score = 3.5, Yes, z-score is unusual.
Step-by-step explanation:
Since it is -1, put 1/something
80
3t - 2 =-11
3t = -11+2
3t= 9
divide both sides by 3
t = -3
8/10
thanks for the pts
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$31.30 is the total bill
if you multiply 26.53 by 18% you get 4.77. then when you add the 26.53 by 4.77 you would get $31.30. Your welcome (pls give brainliest)