An engineer is testing an experimental engine for its efficiency. The engineer runs the
engine
under load and measures its output at intervals of thours. At the beginning of the test the
engine was outputting 2900 watts. At the first interval the engine was down to 2892.75
watts. Write an exponential decay formula to model this situation.

need more information

step-by-step explanation:

answer: y=0 if that is what u r looking for

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.

the first option i believe

step-by-step explanation: