Matrixs van holds 14 gallons of gas and can be driven 25 miles per gallon. his next road trip is 1050 mile away. how many times will he have to fill up the tank?

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

For the equations below which statement is true ?

Need on this one asap im almost done with this subject