There would be 107 whistles
-equation- 235-128=107
Find the probability of obtaining 3 heads when flipping 4 coins
Subtract 3 first so it would be 7x=15
then divide by 7 so x would be approximately 2.14
The answer is d.61. 66+7=73. 13+8=21. 52+9=61. 10+10=20
That's an expression, so the only thing you can do is simplify it, but that already looks simplified.
