What is the area of this parallelogram?

a > 60 cm²
b > 66 cm²
c > 72 cm²
d > 132 cm²

i think its d just confirming my answer

If 25% of y is 30, what is 60% of y?

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In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?