What is the value of z? a.45 b.50 c.85 d.170

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5