depends on the type of question. if it's a yes/no question (in other words it requires only a yes or no for an answer), then you use the word -ma (this is toneless) at the end.
there are other type of questions, (like when, who, what, how)....these questions have their chinese counterparts
okay, that's an upside-down U and the maximum value is at the top
if you put the function in vertex form you can easily find the vertex:
group the first two terms and factor out the negative (essentially factoring out -1):
p = - (x²-14x) + 54
complete the square by taking the middle...
add the numbers together: 9+3+11 = 23
you want the ratio of total number of grapes to total number of fruits
this should be consistent no matter how many fruits you have, so:
9/23 = x/161
cross-multiply and solve for x (number of grapes in a total of 161 fruits)
23x = 9*161 --->...