Find the area of the triangle

The sales tax rate is 7.25%. how much tax in dollars is added on an item that costs $56.00? a. $4.06 b. $7.25 c. $14.50 d. $60.06

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30