(64-8)÷4 answer ASAP please

What is true about the dilation? it is a reduction with a scale factor between 0 and 1. it is a reduction with a scale factor greater than 1. it is an enlargement with a scale factor between 0 and 1. it is an enlargement with a scale factor greater than 1.

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle