Aproblem states: "there are 7 more girls than boys in a class. there are 23 students in the class in all. how many girls are there in the class? "
what are the unknowns in this problem?
a. the number of boys in the class
b. the number of boys and the number of girls in the class
c. the number of girls in the class
d. the number of students in the class

All but D I'd presume. if you can't choose multiple then B

The number of boys and girls in the class

Explanation:

Took the test

Robert E. Lee can be described as option A. a patriot.

Explanation:

Robert E. Lee was a commander of the Confederate States Army. In the famous letter he wrote his son, his teaching concerns moral, values, behavior, and patriotism.

He tells his son of the importance of honesty. According to Lee, his son should never speak of others behind their back; he should always be firm in his words and wise in his decisions; finally, he should always do what is his duty.

Lee, regarding the topic of duty, tells a story to serve as a role model for his son. While the Legislature of Connecticut was in session, there was a sudden darkness, like an eclipse, that scared the ones who were gathered. When they talked of adjourning the meeting, one man - the old Puritan, as Lee refers to him -, stood up and claimed he would like to be found doing his duty in case it was the day of judgment (the end of times). This concept of serving your country until the very end is rooted in patriotism. Robert E. Lee is teaching his son to serve his country, even if it is his last day on Earth.