Right triangles \boxed{1} 1 ​ start box, 1, end box, \boxed{2} 2 ​ start box, 2, end box, and \boxed{3} 3 ​ start box, 3, end box are given with all their angle measures and approximate side lengths.

b.an increase in a causes b to decrease

b.-4 units

all you   do is count how many times you move

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.

answer: the answer is b. i think hope i got it correct

step-by-step explanation: