Hello,
Answer B
y=-x^4+1
y'=-4x^3
y"=-12x² is always <0 : concavity downside.
0.76 x 2 = 1.52
1.40 x 2 = 2.80
1.52 + 2.80= 4.32
Answer is 4 dollars and 32 cents
Answer: it is 4i78f4950
Step-by-step explanation:
Five billion, three hundred sixty four million, eight hundred seventy nine thousand, nine hundred sixty seven
