nada
step-by-step explanation:
lockers 1, 4, 9, 16, 25, 40, and 49 are open
i ran through it by the other answer is wrong
a) 7x=7
1.3
3x2=6 9x+6
bring down the 6 on both sides
6+6=12
12= 9x
divide by 9
12/9 =
1.3 =x