All it takes for a relation to be a function is for each possible first number of a pair there's only one possible second number.
So if any of the sets has two pairs with the same first number, that one's not a function.
The last one has (3,2) and (3,5) so isn't a function.
Answer:$31.05
Step-by-step explanation:
I added the hours then multiply by $3.45
The formula we'll use for this is the simple interest formula, or:
Where:
<span><span>P is the principal amount, $4000.00.
</span><span>r is the interest rate, 12% per year, or in decimal form, 12/100=0.12.
</span><span>t is the time involved, 3....year(s) time periods.
</span><span>So, t is 3....year time periods.
</span></span>
To find the simple interest, we multiply 4000 × 0.12 × 3 to get that:
<span>
The interest is: $1440.00</span>
