What is this function written in vertex form? f(x) = (x –1)2 – 7
f(x) = (x +1)2 – 7
f(x) = (x –1)2 – 5
f(x) = (x +1)2 – 5

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1

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.

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21