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)

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

Graham’s monthly bank statement showed the following deposits and withdrawals. -$25.20, $42.75, -$22.04, -$18.50, $74.11. part a if grahams baldness in the account was $37.86 at the beginning of the month,! 27/4! 2// the account balance at the end of the month? ? plz i will give you 100 points

The blue lake trail is 11 1/2 miles long. grace has hiked 1 1/2 for 2 hours. how far did she from the end of the trail