20 points Which equation represents a parabola opening downward with a vertex at the Irgun and a focus at (0,-2)?

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

Acircle has a circumference of 7.850 units. what is its radius?

The water company charges a residential customer $41 for the first 3,000 gallons of water used and $1 for every 200 gallons used over 3000 gallons. if the water bill was $58 how many gallons of water were usedanswersa 3400 gallonsb 6000 gallonsc 6400 gallons d 7000 gallons