Identify the veryex and y intercept of the graph of f(x)=-3(x+6)^2+9

Of the 304 people who attended a school play, 5/8 were students. how many of the people who attended were students.

Sara has 2 2/3 cup taco meat. she needs 1/6 cup to make one taco. how many tacos can sara make with the taco meat she has?

Arectangular garden is 5 feet long and 3 feet wide. a second rectangular garden has dimensions that are double the dimensions of the first garden. what is the percent of change in perimeter from the first garden to the second garden?