The fastest train in the western hemisphere is the acela express. on a route between boston, massachusetts, and new haven, connecticut, the train regularly travels 135 miles in 60 minutes. what is the speed, in miles per minute, on this portion of the route? miles per minute

Witch represents the inverse of the function f(x)=1/4x-12

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

3x = 729 solve for x plz . it's urgent. will mark