Answer:
y=(7)^x represents the exponential growth
Answer:
12 years younger.
Step-by-step explanation:
Let Jan's age be J and Karyn's age be K.

Jan's age 8 years ago is 2/5 of Karyn's age 4 yeaRs from now.

=> 
=> 4K = 48 X 3
=> K= 36.
=> J= 24.
So Jan is 12 years younger.
Answer:
(-8,8)
Step-by-step explanation:
Simplify |n| + 4 < 12. To do this, subtract 4 from both sides. This results in:
|n| < 8. The solution set includes all real numbers between -8 and 8, but not -8 itself or 8 itself.
9 times 12 is 108. so 42/108=21/54