Answer:
x+3x=140000
x=35000
in 2015, they earned 35000
in 2016, they earned 105000
Step-by-step explanation:
y=x²-10x-7
a>0 so we will be looking for minimum
x=-b/2a=10/2=5
y=25-50-7=-32
Answer: (5;32)
y=-4x²-8x+1
а<0 so we will be looking for maximum
х=-b/2a=8/-8=-1
у=4+8+1=13
Maximum point (-1;13)
35p - 14u + 49
The answer is X=6 & Y=3 ......
