Which description could be written as a linear function?
eight more than twice a number
three more than the product of two numbers
ten more than the square of a number
nine more than one divided by a number

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

The area (a) of a circle with a radius of r is given by the formula and its diameter (d) is given by d=2r. arrange the equations in the correct sequence to rewrite the formula for diameter in terms of the area of the circle.