Why is the efficiency of a machine always less than 100 percent

The cupcakey sells a half-dozen donuts for $16.50. Write a rate to determine the cost per cupcake.

31. The bus fare in a city is $1.25. People who use the bus have the option of purchasing a monthly discount pass for $15.00. With the discount pass, the fare is reduced to $0.75.

Blaine says that the product of a positive integer and a negative integer is always less than either factor. Is he correct? Provide examples or counterexamples to support your answer.

5+3+2 = 151022 9+2+4 = 183652 8+6+3 = 482466 5+4+5 = 202541 7+2+5 = ?

Which inequality statement describes the two numbers on a number line? "16 and a number 10 units to the left of 16" A) 6 > 16 B) 6 < 16 C) 10 < 16 D) 10 > 16