Is 4.565656 Rational or Irrational

How to use order of operation in 20 divide by 4 multiply 5 = 1

Clarence wants to buy a new car. he finds an ad for a car that costs 27,200 dollars. suppose his local sales tax is 7%. -how much would he have to pay? -what is the cost of the car including tax? -if clarence has 29,864 saved, can he pay cash to buy the car?

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585