What is mZ1?
820
660
1

∠1 = 148°

Step-by-step explanation:

the triangle interior angles = 180°

the unknown interior angle = 180° - 82° - 66° = 32°

∠1 = 180° - 32° = 148°  because it is supplementary to 32°  (adds together to total 180°)

$450

step-by-step explanation:

first, you have to multiply 150x2=300

next, you have to add 150+300= 450

3x + 4y -25 =0 represents the amount of change sianna should recieve