Part a: solve −np − 80 < 60 for n. show your work. (4 points) part b: solve 2a − 5d = 30 for d. show your work. (6 points)

(a) n > - , (b) d =

(a) isolate the term with n by adding 80 to both sides

- np < 140

multiply both sides by ( - 1), remembering to reverse the inequality sign as a consequence of multiplying by a negative quantity.

np > - 140

divide both sides by p

n > -

(b) subtract 2a from both sides

- 5d = 30 - 2a

multiply through by (- 1)

5d = - 30 + 2a

divide both sides by 5

d =

5104.38 inches

step-by-step explanation: