Answer:
The nonpermissible replacement of the variable y is -3
Step-by-step explanation:
The nonpermissible replacement of the variable in a certain expression is the value of the variable that will make the denominator of the expression zero.
The expression
has the denominator 
This denominator cannot be equal zero, thus,

Answer:
the first mistake was in step 2
Step-by-step explanation: she should not have moved the y to the other side first, she should have moved the other numbers to get one of the y's alone
Step by step:
Each day it takes a sample of 15 pies - on Monday he needed 4:
4/15 = x/450 (450 being the total for each day)
4 x 450 = 1800
1800 divided by 15 = 120
120 is the amount of pies that were made on Monday
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Answer 7 is the anser please give breanly
Step-by-step explanation: