Y=7500(1+0.3)^x what is the initial value

Two parallel lines are crossed by a transversal. what is the value of x? x = 40 x = 70 x = 110 x = 130

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.