Answer:
Step-by-step explanation:
The equation of the nth term of the arithmetic sequence is:
d = 38 - 29 = 9
a₁ = 29
Therefore:
1
12x²-8x-15 should be your answer
Answer: -31
<u>Step-by-step explanation:</u>
f(x) = -x⁴ + 3x³ + x² - 8x - 16
f(3) = -(3)⁴ + 3(3)³ + (3)² - 8(3) - 16
= -81 + 81 + 9 - 24 - 16
= -31