Elise says , if you subtract 17 from my number and multiply the difference by -3 , the result is -54 what was Elise number ?

Geometry answer picture question pls . reason and statements

Fiona races bmx around a circular dirt course. if the radius of the course is 70 meters, what is the total distance fiona covers in two laps of the race? a. about 30,772 meters b. about 15,386 meters c. about 879.2 meters d. about 439.6 meters e. about 219.8 meters23 points hurry

Find the value of x for which line a is parallel to line b