Answer:
C
Step-by-step explanation:
2x(-7)^2-9 = 2x49-9=98-9=89 maybe
associative prop
$3.84
Step-by-step explanation
move the decimal back two place - .28, it is a mark up so add a 1 at the beginning - 1.28 - multiply - 3 x 1.28 = 3.84