Mariana paid $6 for 5 pound of apples. how much will she pay for 3 pounds of apples? let x be the amount she will pay for 3 lbs. write an equation! the answer is 3.6.

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

It says factor each expression 49x-28?