Which of the following represents the multiplicative inverse of -90? A. - (- 90)
B.
C. 90
D. -90

How do i do this activity, is appreciated

If you could answer these your a life saver

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?