Pls help with all 3 problems!

Answer:
Q1 $120
70 x 1.5x100 = 1.05
Q2 .45 quarts of paint
0.45
------
1.5
x 100%
Q3 bill paid 7.9 percent in taxes
35.99
---------
449.99
x 100% = 7.9
Step-by-step explanation:
good luck also answer 2 may be wrong sorry if it is