Answer:
C. 1.2x
Step-by-step explanation:
He pays 1 x for his haircut, and an additional 20% on top of that, or an additional 0.2x. If you write that as an expression, you can simplify it like this:

You can also work it out by multiplying by 1.2 as stated in answer C. If his haircut costs $10, adding a 20% tip of $2 is the same as multiplying by 1.2.

Answer:
b²+3.5a+8.4b
Step-by-step explanation:
Given the expression
3b^2 + 2(a+5.4b) -2.4b + 1.5a - 2b^2
Expand
3b^2 + 2a+10.8b -2.4b + 1.5a - 2b^2
Collect the like terms
= 3b²-2b²+2a+1.5a+10.8b-2.4b
= b²+3.5a+8.4b
Hence the equivalent expression is b²+3.5a+8.4b
By the laws of logs
log p/n = log p - log n = 6
log m/n = log m - log n = 8 subtract
log m - log p = 2
log m/p = 2
So m / p = 100
The answer is 165 because you take 66 and multiply it by .40 and you end up with 165. (.40 because percent means of one hundred so you make 40 to .40 )
Answer:
he was there 3 hours
Step-by-step explanation:
so you take 160 and subtract 55 from that number
160-55=105
next take 105 and divide that by 35 to get how many hours he was there.
105÷35=3
if you need this in slope intercept for a graph you use the equation where y = the total money spent
y=35x+55