Answer:
the answer is A
Step-by-step explanation:
10
5x^2-4x+1 + -3x^2+x-3= 2x^2-3x-2
240
5
35 in total, sliced into 7 equal parts (1 per week).
so, each weekly part is therefore 35/7 = 5.
3/2=1.5 hour=5400 second
Hope it helps you