Numa adição de três parcelas, a primeira é 68, a segunda tem 16 unidades a mais que a primeira e a terceira tem 15 unidades a mais que a segunda. A soma das três parcelas é: a)270
b)251
c)236
d)234​

Kathy spent 5/8 of her money on books and another 1/6 of her money on stationeries.what fraction of kathy’s money was left?

Which of the following is an example of conditional probability

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?