To a formula or equation for a specified variable means to rearrange it so that the variable appears alone on one side of the equal sign.

I think they're looking for 'isolate' maybe..or it could be 'solve' 

Your answer is going to be solve. To solve a formula or equation for a specified variable means to rearrange it so that the variable appears alone on one side of the equal sign. I hope this helps!! :)

The answer to your question is b

I’m pretty sure the * means multiplication. so, if you multiply 5*1, it would equal 5. they are basically are-writing 5x1 as 5*1. so they would be… 5 10152025303540455055