1) given the formula for the general term of an arithmetic sequence, determine t12. a) tn = 1 - 4n b) tn = 1/2n + 3/2 2) which term in the arithmetic sequence 9,4,- has the value -146?

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