Can someone tell me what my sister reading range is cause I don’t understand it that well?

here level is 17.5 mean her reading level It 6th grade level

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.

she will pay the extra amount