Answer:
32
Step-by-step explanation:
25% of 32 is 8
15, 30, 45, 60, 75, 90, ....
Let
x---------> represents Martin's sister's age
y--------> represents Martin's age
we know that
--------> equation 
--------> equation 
Substitute equation
in equation 
![x+[x-6]\leq 22\\2x\leq 22+6\\ x\leq 14](https://tex.z-dn.net/?f=%20x%2B%5Bx-6%5D%5Cleq%2022%5C%5C2x%5Cleq%2022%2B6%5C%5C%20x%5Cleq%2014)
therefore
<u>the answer is</u>
Part a) An inequality that can be used to represent this situation is
or 
Part b) the oldest age Martin's sister can be is
years old
direct variation
u=kv
6=k(-7)
k=-6/7
u=kv
u =-6/7 * 4
u =-24/7
Answer: u = -24/7 or -3 3/7
Answer:
155,520
Step-by-step explanation: