The price of a television is $1625. the total price is with tax is 1803.75. what is the rate o the sales tax

I'm terrible at math any here is appreciated.

Select all the correct statements. the amount in dollars an electrician charges in terms of the number of hours worked is represented by the function y = 22x + 42. from the function, identify all the phrases that hold true for the situation. the electrician charges an initial fee of $22 the y-variable represents the number of hours the electrician charges an initial fee of $42 the electrician charges $22 for every hour worked the x-variable represents the electricians charges in dollars the electrician charges $42 for every hour worked

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.