The sum of a number and seven more than the number is 43. What is the number?

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∣∣

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Which expression shows the sum of the polynomials with like terms grouped together