Anumber plus it’s half is 21
how to write an equation?

Use the discriminant to describe the roots of each equation. then select the best description. 2m2 + 3 = m double root real and rational roots real and irrational roots non-real roots

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

The area of square garden is 300m squared. how long is the diagonal?