Marsha has three times as many one dollar bills as she does five dollar bills . She has a total of 23$. How many of each bill does she have

Show me how you find x and determine what x is you i appreciate it : )

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

The statement tan theta= -12/5, csc theta=-13/12, and the terminal point determained by theta is in quadrant two