Find the exact value of sec30°

Empty box + box + empty box fill in the box is equal to 30 how

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?

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2