Page 26 - Algebra 1

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Use braces and digits to designate the set of whole numbers.
The set {1, 2, 3,...} represents what set of numbers?
Multiple Choice What is the second term in the expression
_
√8 + gh +(3x+y)+15gh?
5
_ A (3x+y) B 15gh C √8 D gh
5
Astronomy To calculate the amount of time it takes for a planet to travel around
2πr
the sun, you use the following expression: _v . Which values are constants, which
are variables, and which are coefficients?
Entertainment Admission price for a matinee movie is $5.75 for children and $6.25
for adults. Brad uses the expression $5.75c + $6.25a to calculate the cost for his family. What are the variables in the expression?
Error Analysis The surface area of a rectangular prism is 2lw + 2lh + 2wh. Two students determined the variables in the formula. Which student is correct? What was the error of the other student?
Cost Analysis A large medical organization wants to put two cylindrical aquariums in the pharmacy area. It will cost the pharmacy 53 cents per cubic inch of aquarium. This is the formula for figuring out the cost: P = (πr2h)($0.53).
a. Find the coefficients of the expression.
b. Find the variables of the expression.
Multiple Choice Which shape is not a parallelogram?
A square B rectangle C trapezoid D rhombus Cycling A bicycle shop uses the expression $5 + $2.25h to determine the charges
for bike rentals. How many terms are in the expression?
Attendance The attendance clerk keeps records of students’ attendance. Which subset of real numbers would include the number of students in attendance each school day?
Student B
variables: l, w, h
Student A
variables: 2lw, 2lh
Lesson 2 11