The price of a book increased from $20 to $25. what is the markup rate?

25%

3%

20%

5%

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

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.)