Answer:

' 28% Tax Bracket tester
'
PRINT "Enter income"
INPUT INCOME
IF  INCOME >= 24000 AND INCOME <= 58150 THEN
  PRINT "28 percent tax bracket"
ELSE
  PRINT "some other tax bracket"
END IF
'
END

Writing Complete Logical Expressions

The AND combines the results of two relational expressions. This looks like:

INCOME >= 24000 AND INCOME <= 58150
-------------       ---------------
relational            relational
expression            expression

Each relational expression must be complete. The following is a MISTAKE:

INCOME >= 24000 AND <= 58150
-------------        ---------------
relational                not a
expression             relational
                       expression

In this INCORRECT logical expression, the characters that follow the AND do not form a complete relational expression. QBasic will complain if you entered the program this way.

QUESTION 13:

Here is an incorrect logical expression that is supposed to test if a person's age is between 21 and 35.

AGE >= 21 AND <= 35

Fix this logical expression.