I need help with angles

If g(x) is an odd function, which function must be an even function?

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

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?