Answer:
38
Step-by-step explanation:
Given that,
x = -4
f(x)=x² - 4x +6
so,
f(-4)= (-4)² - 4 . (-4) +6
=16 +16 +6
= 38
Answer:

Step-by-step explanation:
<u>Step 1: Combine like terms
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Answer: 
Answer:
11 buses
Step-by-step explanation:
Divide 42 by 4 to get 10 and a remainder of 2. The 2 students not on the bus need another bus so you need 10+1=11 buses
Hello,
A)
h max
A:-2x/100+32/100=0==>x=16
B:-2x/100+18/100=0==>x=9
B)
y=0
A:-x²+32x+400=0==>x=41.612496... or x=-9.61... exclude
B:-x²+18x+500=0 ==> x=28.1039415...or x=-15.1039.. exclude
C)
x=0
A:y=4
B:y=5
D)-x²/100+32/100x+4=-x²/100+18/100x+5
==>14/100*x=1 ==>x=50/7=7.1428....