Write the equation of the circle passing through the origin with center (– 9, –12) .
(x + 9) – (y −12) = 325
(x + 9)2 + (y +12)2 = 225
(x + 9)2 + (y +12)2 = 325
(x − 9)2 + (y −12)2 = 225
(x − 9)2 + (y −12)2 = 325

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq