Translate each of these situations into a variable expression such as those found in a magic number chart.

1. Think of a number and multiply it by seven.

   Hint (a):

   Use $x$ to represent any number you think of.

   More Help (a):

   What would the expression look like if you multiplied your number by $7$?

   Answer (a):

   $7x$

2. Think of a number and divide it by eight.

   Hint (b):

   See (a).

3. Think of a number and reduce it by ten.

   Hint (c):

   What happens to a number when you reduce it by $10$?

   More Help (c):

   See (a).

4. Think of a number, add two, then multiply by five.

   Hint (d):

   See (a).

   Answer (d):

   $5 ( x + 2 )$