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Entry checkpoint: choose a starting point: original cases with explanations after your first response.
Paper packet. Every task here also exists on screen, where it is checked automatically; answers written on paper are not assessed by Nydus. When you are back at a device, enter your answers there.
Without examples, distinguish a fixed relationship from a relationship that changes across valid cases. The three tasks use a root restriction, successive discounts and a handshake count.
A nonzero real number z satisfies z(z-1)=0. Quantity A: z Quantity B: 1 Compare the quantities using only the stated information.
An item originally costs P, where P is positive. Two stores reduce its price: one by 15 percent then 10 percent, the other by 25 percent once. Quantity A: First store's final price Quantity B: Second store's final price Compare the quantities using only the stated information.
Integer n is the number of members in a club, and n is at least 3. Every pair of different members shakes hands exactly once. Quantity A: Number of handshakes Quantity B: n Compare the quantities using only the stated information.
Use this foundations starting sample to choose the next worked lesson; repeated exposure is review and does not predict an official score.