Megan answered 18 questions correctly on a test. that is 75% of the total number of questions. how many questions were on the test.

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.

3x = 729 solve for x plz . it's urgent. will mark

Agrasshopper weighs 0.89 grams. express the grasshopper’s weight in scientific notation.