Is anyone good with this? i need finding the answer.

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Five infinity stones cost $16.80. what is the price per infinity stone ?

Asix-sided die of unknown bias is rolled 20 times, and the number 3 comes up 6 times. in the next three rounds (the die is rolled 20 times in each round), the number 3 comes up 6 times, 5 times, and 7 times. the experimental probability of rolling a 3 is 10 %, which is approximately % more than its theoretical probability. (round off your answers to the nearest integer.)