Answer:
a) 5600
b) 5600
Step-by-step explanation:
[tex]a) \: ( - 0.1 \times {140}^{2} ) + (34 \times 140) + 2800 \\ ( - 0.1 \times 19600) \: + 4760 + 2800 \\ - 1960 + 4760 + 2800 = 5600 \\ \\ b) \: ( - 0.1 \times {200}^{2} ) + (34 \times 200) + 2800 \\ ( - 0.1 \times 40000) + 6800 + 2800 \\ - 4000 + 6800 + 2800 = 5600[/tex]
