If m||n, what is the value of x° in the figure below?

Select one:
A. 40o
B. 60o
C. 80o
D. 100o
E. 120o

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827