Part A:
Identify a coefficient, a variable, and a constant in this expression:
75d + 8w + 25
A coefficient is a number which multiplies with a variable. i.e. goes in front of it.
A variable is something that changes, i.e. a letter e.g. d (days) and w (windows)
A constant is something that is NOT RELIANT on any variable. i.e. it stays the same, constant, no matter what.
The coefficients in this are: 75 and 8
The variables in this are: d and w
The constant in this is: 25
Part B:
Converting the sentence into math: d = 5, w = 48,
We simply substitute this into: 75d + 8w + 25
So: 75(5) + 8(48) + 25 = $784
Part C:The snacks which is the constant, was 25. The state it is now 40.
The constant has changed. As for the explanations stated above.