Can somebody help me please ​

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

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.

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x