3 years ago

Aaron is three times as old as his son. In ten years, Aaron will be twice as old s his son. How old is aaron now

1 answer:

5 0

I will guess that it is either 30 or 40 idk hope this helps

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zheka24 [161]

Answer:

$41

Step-by-step explanation:

One room rents for $68,
Two rooms for $65 each,
In general, the group rate per room is found by taking $3 off the base of $68 for each extra room.

So,

$a_1=\$68\\ \\a_2=\$65\\ \\a_3=\$62\\ \\...$

where $a_n$ is the rate per nth room rented.

This is an arithmetic sequence, so

$a_n=a_1+(n-1)\cdot d$

In your case,

$a_1=68\\ \\n=10\\ \\d=-3$

Hence

$a_{10}=68+(10-1)\cdot (-3)=68-9\cdot 3=68-27=41$

This means if a group rents 10 rooms, the charge per room is $41.

5 0

3 years ago

Molodets [167]

I can help you what problem??

5 0

3 years ago

Orlov [11]

Solution:

f(x) = 2x + 3
g(x) = x - 9

f(x) + g(x)
= (2x + 3) + (x - 9)
= 2x + x + 3 - 9
= 3x - 6

6 0

3 years ago

olchik [2.2K]

8+2x is the answer. The rest of these characters is for the >20 rule

5 0

3 years ago

Mkey [24]

Answer:

True

Step-by-step explanation:

5 0

3 years ago