Which best explains how the institutional revolutionary party (pri) maintained power in mexico for many years? it defeated opposition parties by controlling congress and using election fraud. it ruled so well that people prospered and opposing parties did not succeed. it acted like a dictatorship and jailed those who opposed the way they ruled. it offered the working class many benefits and kept dissension to a minimum.

It defeated opposition parties by controlling congress and using election fraud is the correct answer.

The PRI (Institutional Revolutionary Party) was founded in 1929 ans since then it held uninterrupted power in Mexico till 2000. The main reason for this was, it controlled Congress, the freedom of press was curbed and was used for its election propaganda and elections were often rigged in favor of the party.

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