rithmetic and Geometric Sequences: Practice
Question 2 of 5
Select the correct answer.
Charlie and his friends are playing a game. They started round 1 of the game with 27 people. The
number of people in the first five
rounds is shown in the table.
Round
Number of People
1 27
2 25
3 23
4 21
5 19
What is the explicit function that can be used to determine the number of people remaining in the nth round?
Of(n) = -2n + 27
of(n) = -2n + 29
f(n) = 2n + 27
f(n) = 2n + 29

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.

391.6 is the correct answer