If mLEBD= 4x - 8 and MZEBC= 5x + 20, find the value of x and
MLEBC.

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

Whoever gets this right gets the ! the half life of a soul smelling substance is 4 years. if you have 8 oz of this strange substance, how much of it will you have after 20 years? show work.