It's not a really a question but how to solve these types of questions
let f(x) = 9x − 2 and g(x) = −x + 3. find f(g(

let f(x) = 2x + 2. solve f−1(x) when x = 4.

let f(x) = x + 8 and g(x) = x2 − 6x − 7. find f(g(

let f(x) = x2 − 8x + 5. find f(−1).

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?

Si la base de un triángulo isósceles mide 70 m y el ángulo opuesto a ésta mide 58°; entonces ¿cuánto mide la altura de dicho triángulo? a) 21.87 m. b) 40.01 m. c) 43.74 m. d) 63.14 m.