Can anyone help? I’ll give

9514 1404 393

  $4917.50

Step-by-step explanation:

Using the method in expected for a table of this nature, the tax is ...

  tax = 2% × $3000 + ...

     3% × ($5000 -3000) + ...

     5% × ($17000 -5000) + ...

     5.75% × ($90000 -17000)

  = $60 +60 +600 +4197.50

  tax = $4917.50

__

The attached spreadsheet simplifies each row of the table to a formula of the form ...

  tax = rate × income - discount

The final value of tax is the maximum of the values on the rows of the table when they are computed this way.

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!