Phia

Sandra spent one-fifth pf her money and loaned one-third of the remainder to her brother Sam. She then had $24. How much money did she have at first?

10.= C.

Its 189.673 Because yes, like oobleck said: a(t) = -9.81 v(t) = -9.81t + C since v(0) = 60, v(t) = -9.81t + 60 h(t) = -4.9t^2 + 60t + C since h(0) = 6, h(t) = -4.9t^2 + 60t + 6 Velocity is 0 which means -9.8t+60=0 which means t=60/9.8

3 I believe

Its 1/24, the slope of the tangent line to the graph y=f^-1(x) at (3,1) is the reciprocal of the slope of the tangent line to the graph y=f(x) at (1,3). So f'(x)=20x^4+4/x^5 so f'(1)=20+4=24 So the slope of the tangent is 1/24

Its -1/pi(sinycos(picosy) where x and y are related by the equation x=sin(picosy)