If I am using a tiny inclined plane to do a tiny amount of work. The output is 4 Joules of energy, but I have input 8 Joules of energy. What is my machine's efficiency?
a
50%
2 Newton meters
b

50 Newton meters
2%

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?

Answer! if you don’t mind, can you explain

What will be the end result for the taxpayer who filed his federal income tax return using the 1040ez form shown belowa he'll owe $173b he'll receive a refund of $173c he'll owe $3921d he'll receive a refund of $3921