In the expression 4x+(x-3)^2 what is the value of b in x^2-bx+9?

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.