Which trinomials are perfect square trinomials?

select each correct answer.

a. a^2+14a+49

b. a^2+26a+169

c. a^2+4a+16

d. a^2+15a+75

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950