20). tasha is planning an expansion of a square flower garden in a city park. if each side of the original is increased by 7m, the new total area of the garden will be 144m^2. find the length of each side of the original garden.
a) 19m
b) 12m
c) 5m
d) square root 5m
21). the area of the playground is 255 yd^2. the width of the playground is 2 yards longer than its length. find the length and width of the playground.
a) length = 17yd, width = 15yd
b) length = 17yd, width = 30yd
c) length = 15yd, width = 17yd
d) length = 30yd ,width = 17yd

Find the simple interest earned to the nearest cent for each principal,interest rate,and time 735 7% and two and a half years

Answer! if you don’t mind, can you explain

Carla was trying to decide what to do saturday evening. she has $100 available to spend for the evening. she has narrowed her choices down to these events: braves game, a concert of an artist she likes, or the georgia aquarium. admission to the braves game is $25, hot dogs cost $10, sodas cost $5. the concert costs $25 for admission, $20 for a souvernir t-shirt, and $10 for a soda. the georgia aquarium has the show of a lifetime with an all you can eat and drink that costs $100. carla does not want to take any driving chances, so in addition to the cost of the aquarium, she will also need to pay for her uber/lyft, which is $15 each way. which option should carla choose if she wants to spend the least? based on that choice, what then is carla's oppotunity cost? fully explain your answer in at least one paragraph.