At the end of the napa valley inline race, santy had skated 42 km. how many meters had he skated?

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?

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.

Which set of fractions are ordered from least to greatest