What graph represents the function h(x)=-(x+6)3-3

What is the celsius temperature that is equal to 94 degrees fahrenheit using the formula f=9/5 c+32

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

Is the power produced directly proportional to the wind speed, give reasons for your answer?