Harmony earns a $42,000dollar sign, 42, comma, 000 salary in the first year of her career. Each year, she gets a 4% raise. Which expression gives the total amount Harmony has earned in her first n years of her career?

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You and a friend race across a field to a fence and back. your friend has a 50-meter head start. the equations shown represent you and your friend's distances dd (in meters) from the fence tt seconds after the race begins. find the time at which you catch up to your friend. you: d=∣−5t+100∣d=∣−5t+100∣ your friend: d=∣−313t+50∣∣

Which of the following expressions is equal to 2x^2+8