Answer:

When squaring a fraction, square both numerator AND denominator
The third equation is correct. The easiest way to solve a problem like this is to plug the x-values from the chart into the equations and see which one equals the y-value in the chart.
Answer:
2
Step-by-step explanation:
I dont know for sure though...
Answer:
I think its 28 feet
Step-by-step explanation:
2x2=4
3x8=24
24+4=28 ft
Answer:
They need to deposit $31,172.49
Step-by-step explanation:
The compound interest formula is given by:

Where A is the amount of money, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time the money is invested or borrowed for, in years.
In this problem
We want to find P for which
when 
So





They need to deposit $31,172.49