Can random samples and proportional reasoning be used to determine precise information about a population? Explain.

yes

Step-by-step explanation:

A population can be determined proportionally and can be used as random samples by explaining for example how much people speak a different language other than english or sampling peoples hair color,some predictions made can be true whether its asking 5,10,20,30,40,100 people.

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

step-by-step explanation: