To perform all the indicated operations means to ___ an expression.

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

An equation representing lyle’s hedge-trimming business is a = 12n - 300 where a is the amount of profit or loss in dollars and n is the number of hedges trimmed. how would the graph of lyle’s business change if the equation a = 10n - 300 represented his business? the graph would be flatter. the graph would be steeper. the graph would start closer to the origin. the graph would start lower on the y-axis.

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?