(4/9)/16 = 4/(9*16) = 4/(4*4*9) = 1/(4*9) = 1/36
One counter is

<span> if 16 of them are </span>
1. x = -4 ; f(x) = -(-4) = 4
2. x = -3 ; f(x) = 2(-3) + 1 = -5
3. x = 0 ; f(x) = 2(0) + 1 = 1
4. x = 2 ; f(x) = 2 + 3 = 5
5. x = 5 ; f(x) = 5 + 3 = 8
I dont know if this is right but the answer to 2(12+8x)-3(4x-9) might be 4x+51?
Use the formula I = Prt. Plug $2300 into P.
Plug 7.5% (decimal form is 0.075) into r.
Plug 10 into t.
Your simple interest after 10 years is $1725