30 Développer et réduire les expressions suivantes A = (x + 3)(x + 2)
B = (x + 3)(2x + 4)
C= (x - 7)(x + 9)
D = (x - 3)(4 - x)
E = (3x + 4)(5x – 7) F=(-2x + 8)(4 - x)

Anyone know? will mark brainliest if correct

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73