It is irrational because you have and unsolved variable
You have a fixed rate of $25, meaning you get a haircut, it's $25
ANY other service is an extra $15
So, let's make the equation...
y=15x+25
Now, to just get a haircut it's $25.
But, let's say you get a haircut+shampoo
It'd be..
y=15(1)+25
y=$40
Another one..
You get a haircut+shampoo+highlight
y=15(3)+25
y=$70
Answer:
a) 6 gigabytes
b) $100
Step-by-step explanation:
Let c represent the total cost in dollars and d represent the amount of data used in gigabytes.
For the first smartphone
One smartphone plan costs $52 per month for talk and messaging and $8 per gigabyte of data used each month.
Equation =
c = 52 + 8d
For the Second smartphone
A second smartphone plan costs $82 per month for talk and messaging and $3 per gigabyte of data used each month.
Equation =>
c = 82 + 3d
How many gigabytes would have to be used for the plans to cost the same?
We would equate both cost to each other
52 + 8d = 82 + 3d
Collect like terms
8d - 3d = 82 - 52
5d = 30
d = 30/5
d = 6
Therefore,
a) The number of gigabytes for the cost of both Smartphone data plans to be the same = 6 gigabytes.
b) The cost of both plans if 6 gigabytes is used =>
c = 52 + 8d
c = 52 + 8 × 6
c = $100
Answer: B and D
Step-by-step explanation:
A. States that the length of AB is -3. No, it should be 3. So that is incorrect.
B. States that the absolute value of 6-1 is the length of BC. It is 5. That is correct.
C. AB + AC = 3+8 = 11. BC is 5. That is incorrect.
D. AB + BC = AC. 3+5= 8. AC is 8. That is correct.
E. The length is not 6. It is 5. That is incorrect.
Hope that helps!
Answer:
times 0.4
Step-by-step explanation:
The recursive formula allows a term in the sequence by multiplying the previous term by the common ratio r
Here
r = 
= 
= 0.4
Thus the recursive formula is
c(n) = c(n - 1) × 0.4 → with c(1) = 500 ← the first term in the sequence
