Which expression is equivalent to -3m + 7.5? A. -3(m + 2.5)
B. *3(m - 2.5)
C. 3(m + 7.5)
D. 30 m + 7.5)
Help

I’m still confused on how to work the percentages

Solve for x in the equation x2 - 12x + 36 = 90. x= 6+3x/10 x=6+2/7 x= 12+3/22 x = 12+3/10

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.)