1.Explain why an open sentence always has at least one variable.
2.Explain the difference between an expression and an open sentence
3. Define in your own words the phrase solution set of an open mathematical sentence.
4.Explain how to find the solution set for 7 + 2n > 31 if the replacement set for n is {10, 11, 12, 13}.
5.Make up an inequality with a replacement set. Find the solution set and explain how you obtained it.
State whether the equation is true or false for the value of the variable given.
6.7(
) - 15 
5
= 25, x = 2
Find the solution set for the inequality, given the replacement set.
7. 3x + 2 > 2; {0, 1, 2}
Solve each equation for y if x is replaced with 6.
8. x - 2 = y
9. 2 + 3 = y
10. Diet. During a lifetime, the average American drinks 15,579 glasses of milk, 6220 glasses of fruit juice, and 18,995 glasses of soft drinks.
a. Write an equation for the total number of glasses of milk, juice, and soft drinks that the average American drinks in a lifetime.
b. What is the total number of glasses of milk, juice, and soft drinks consumed by the average American in a lifetime.