If 60% of a radioactive element remains radioactive after 400 million years, then what percent remains radioactive after 500 million years? What is the half-life of this element?

If the difference in the value of dependent variables for a function is constantly increasing for each subsequent unit of the independent variable of the function, what kind of function does this represent?

What is the distace tweenn (4,-7) and (-5,-7)

2. Aladdin has some lamps. When Aladdin buys three more lamps and adds to the double of the number of lamps he has, the total number of lamps goes up to 15. (a) Form an equation for the above, considering x as the number of lamps that Aladdin has.

The temperature measured in Kelvin (K) is the temperature measured in Celsius (C) increased by 273.15. This can be modeled by the equation K = C When solved for C, the equation is C = K - 273.15 C = 273.15 - K C = K + 273.15 C = 273.15K + 273.15

Solving a Real-World Inequality Samuel is running a 3-mile race. He would like to finish the race in under 33 minutes. He has already run for 10.5 minutes. The inequality 10.5 + X< 33 represents the situation. Solve the inequality.

If a circle has a radius of / sqrt{13} and is centered at (9, - 3), what is the equation of this circle?

I need to show my work on pounds to ounces 12.6pounds

Tony's cat weighs c pounds. Three months from know, the cat's weight is expected to increase by 12.5% Write two expressions to represent the cat's weight in three months.

A rugby player passes the ball 7.75 m across the field, where it is caught at the same height as it left his hand. At what angle was the ball thrown if its initial speed was 12.0 m/s, assuming that the smaller of the two possible angles was used?

Remy has a job at the local store. He spends $80 in a game parlor and $250 for food per month, and saves the rest of his salary.