Exam 2: Sets of Numbers

In Death Valley, California, the temperature can range from 19 degrees Fahrenheit below zero to 128 degrees Fahrenheit above zero. What is the difference between the two temperature extremes?

Let $x = - 1 , y = - 2$ and $z = - 4$ . Find $L = x - y - z$

Let $x = - 7 , y = 3$ and $z = - 2$ Evaluate the expression to find F. $F = x ^ { 2 } - 2 x y + y ^ { 2 }$

Evaluate the expression. $- 11 + 17 - ( - 14 )$

Evaluate the expression. $- 1 - 2 - 4$

Evaluate the following expression: $- 5 + ( - 3 ) - ( - 3 ) - 9$

Translate the phrase to an algebraic expression. If no variable is given, use $x$ as the variable. The ratio of the amount won $\mathrm { W }$ and lost l .

Find the sum. $- ( - 3 ) + ( - 7 )$

Tim was not a very good card player and obtained a score of 26, 2 times in a row. What is Tim s final score?

Evaluate the expression for the given values of the variables. $A = 5 x + y - z$ for $x = 4 , y = 2$ and $z = 5$ . $A =$ __________

Let $x = - 5 , y = 7$ and $z = - 3$ . Evaluate the expression to find F. $F = ( x + y ) ^ { 2 }$ $F =$ __________

Find the sum. $- 12 + 15$

Let $y = - 5$ and $z = - 3$ . Find $F= y - z$

What is the difference in elevation between a plane flying 25,300 ft above sea level and a submarine traveling 440 ft below sea level? Total difference = __________ feet

Find the value of the expression. $x + 3$ for $x = 2$

After joining two pieces of picture frame molding together, a frame maker checks her work by making a diagonal measurement (see the illustration). If the sides of the frame that form a right angle are a = 12 in. and b = 16 in., what measurement should the frame maker read on the yardstick? __________ in.

Simplify the following expression: $| 14 |$

What size is the television screen shown in the illustration? Find d if a = 12 in. and b = 16 in.. __________ in.

Simplify the expression. $| - 14 |$