If the present value of my investment is 2,500 and the rate of interest is 2% p. a compounded semi-annually, what will be the value be after 15years

What is sin 7x/4 ? i need on this urgent trig

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

The coordinate grid shows a pentagon. the pentagon is translated 3 units to the right and 5 units up to create a new pentagon. what is the rule for the location of the new pentagon?