Questions
Use the addition and subtraction rules for exponents to
simplify each expression . Make sure that no negative exponents are left.
Use the rules for exponents to change the given
expression. Make sure that no negative
exponents are left.
Perform the indicated divisions and leave your answers
without negative exponents.
Substitute the values of the variables into the ex pression
and simplify the resulting ex-
pression to a single number .
As sume the fol lowing values of the variables: x = -2, y = 5, z = -6.
Solve by substituting the appropriate values into the
formula ; then simplify the result to
a single number.
18. The volume V of the frustum1 of
a right circular cone with base radii2 a and b and height
h is given by the formula
Find the volume where the height is 12 and base radii are
4 and 9. Do not use a decimal approximation
for π. In other words, write your nal answer as a multiple of π.
Solve:
Solve the proportions using cross multiplication
Solve the word problems
24. On a map of Utah 1/2 inch represents 31.5 miles. If
two cities are 
inches apart, what is the
actual distance between them?
25. Mary Lois sells a house for $175,000 and receives a
commission of $12,250. At the same commission rate, how much commission would
Mary Lois receive for selling a house at $125,000?
1Frustum.- The part near the base
formed by bisecting (cutting) the cone with a plane, parallel to the base.
2Radii.- Plural of radius.
