Just look up how to solve volume
Answer:

Step-by-step explanation:

Remove the brackets and multiply the minus sign through all the numbers in the second polynomial

Rearrange in the highest order

Simplify

Probability that first student prefers mechanical pen = 0.30
P(first student does not and second student does) = 0.70 * 0.3 = 0.21)
P( selecting 2 or fweer) = 0.30+ 0.21) = 0.51 or 51%
Answer:
58.564
or $58.56
Step-by-step explanation: