I've taken this test 4 times this is my 5th time can i get some ?

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

What is the range of the data below? .8090100

Apatient is to take 60 mg of an antibiotic on day 1, take 45mg on days 2 and 3, take 30mg on days 4 and 5 and take 15 mg on days 6 and 7. how many total mg will the patient take?