The weight of radioactive material, f(x), is based on the number of days the mThe weight of radioactive material, f(x), is based on the number of days the material has been exposed to the elements, x. An exponential regression equation relative to the weight of the material is f(x) = 80.402 • 0.931x. Based on this equation, approximately what is the weight of the radioactive material after 2 days? A. 5 B. -20 C. 28 D. 70aterial has been exposed to the elements, x. An exponential regression equation relative to the weight of the material is f(x) = 80.402 • 0.931x. Based on this equation, approximately what is the weight of the radioactive material after 2 days? A. 5 B. -20 C. 28 D. 70

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076