find the amount and compound interest of 1½ years at 10% .p. a, compounded half-yearly ( in the simple interest formula)

Using d, e, and f as values on a triangle and d being 60 degrees, what is the value of e and f if d is 60 degrees? also, what do you notice about the values of e and f?

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)