What is the answer ppp

Measures of the angle of r, 31 s (x+4) t (3x+9)

Three times the sum of a number and seven is negative thirty-six. what is the number?

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?