There were 90 days in the first semester of Margaret’s school year. If she brought her lunch to school 30% of the time, how many days did she bring her lunch during the first semester?There were 90 days in the first semester of Margaret’s school year. If she brought her lunch to school 30% of the time, how many days did she bring her lunch during the first semester?

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.

Select the lengths in centimeters that would form a right triangle

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.