Solve for a.
13(21−3a)=6−a
a) no solution
b) 0
c) −1
d) all real numbers

Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

Suppose your school costs for this term were $4900 and financial aid covered 3/4 of that amount. how much did financial aid cover? and how much do you still have to pay?