What would the equation for e quadratic function be from this graph (see picture)?

Ten times the square of a non-zero number is eqaul to ninety times the number

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236