Ijust need to know if i add, subtract, divide, or multiply, i think i divide but not sure
the sun produces 3.9 ⋅ 10^33 ergs of radiant energy per second. how many ergs of radiant energy does the sun produce in 2.45 ⋅ 10^5 seconds?

Bob’s bank charges him a $3.15 service fee every time he uses an out-of-network atm. if bob uses an out-of-network atm an average of three times every two weeks, how much will he pay in service fees over the course of a year? a. $327.60 b. $109.20 c. $491.40 d. $245.70 select the best answer from the choices provided a b c d

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827