which shows the algebraic representation of the phrase and its value when n = 4.2?


“twenty-eight plus the product of five and a number”


28 minus 5 n; when n = 4.2 the value is 7

28 + 5 n; when n = 4.2 the value is 49

28 n minus 5; when n = 4.2 the value is 112.6

28 n + 5; when n = 4.2 the value is 122.6