How do you get terms, coefficients and constants from an algebraic expression

Coefficients are the numeric part of a term
a constant is a term without a variable
a term is a variable or a product of variables
Ex. 2x + y - 3 -xyz
Terms: 2x, y, -3, -xyz
Coefficients: 2, 1, -1
Constant: -3

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.