Can some one pls help? Given the explicit formula, identify the first term and the common ratio.

an=4(−3)n−1
First term =

Common Ratio =

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?

Write the equation in logarithmic form 8^x=64