4. Khalid took out a loan with a principal of $30,500. After four years, the interest and principal totaled $44,272. How much interest did he pay?
if Khalid made monthly payments of $952 for four years until the loan was paid off, how much
did Khalid pay in service charges?

HELP ASAP

What is the volume of the sphere shown below with a radius of 3?

Ineed if you could explain and give me the answer you! this needs done

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244