Step-by-step explanation:
17) 3x+5-12+4x+2x
3x+4x+2x +5-12
8x-7
if x =6
8*6-7 =48-7
= 41
18.) 9(3x-4y+8)
27x-36y+72
Here’s how to do it, sorry i couldn’t be much help :( i’m graduated and forgot most of this. hope you do well, best wishes ♥️
The first answer
Step by step
His first year costs $8,000
So our total amount to start with is $8,000
His second year will cost 12% more than his first so $8,000 • 1.12 = $8,960
Our total is now $16,960
His third year will again will be 12% more than his last year so $8,960 • 1.12 = 10,035.2
Our total is now $26,995.2
His last year will be 12% more than his previous year so $10,035.2 • 1.12 = $11,239.42
Our final total is $38,234.62
Which rounded equals $38,235
Answer:
x = -2
Step-by-step explanation:
m(x) = 4x+15; m(x) = 7
7= 4x+15
7-4x=15
-4x=15-7
-4x=8 / :(-4)
x= -2
Answer: 21
Step-by-step explanation:
28-(28/100)*25=28-7=21