Answer: n + d = 30
0.05n + 0.10d = 2.20
^^ ur system of equations
Step-by-step explanation:
Answer:
f(x)=2(x+4)(x-1)
=(2x+8)(x-1)
=2x²+6x-8
decreasing
since its negative it will slope down
x ≤ 1
3x+4≤ 7
3x + 4 - 4 ≤ 7 - 4
3x≤3