Estimate the following sum using front-end estimation.

48.1 + 29.7 + 11.8

70
80
90
100

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

Someone me what is the area of this figure? 18m 18m 8m 16m

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.