AnswersEF Math 12 1st Nine WeeksWrite and Solve Equations

Write and Solve Equations Answers

14 verified answers2 views
5

What is a variable?

A
A variable is an unknown number or value represented by a letter
B
A variable always represents the total amount
C
A variable represents a change in value
D
A variable is always represented by the letter x
11

Solve the equation. Then check your solution. 4 – (3a + 4) = 7 a. c. 3 b. –6 d. –3 Please select the best answer from the choices provided

Question illustration
A
A
B
B
C
C
D
D
12

The cost of printing a catalog of the products that your company distributes is a flat rate of $52 plus $0.20 per copy. Let C represent the total cost of printing and x represent the number of copies. Write in symbolic form an equation that will relate C and x. Organize the data into a table of values. Begin with 500 copies, increase by increments of 500, and end with 2500 copies.

A
C = 52.20xNumber of Copies, x Total Cost, C500 $52,2001000 $78,3001500 $104,4002000 $130,5002500 $156,600
B
C = 52.20xNumber of Copies, x Total Cost, C500 $26,1001000 $52,2001500 $78,3002000 $104,4002500 $130,500
C
C = 52 + 0.20xNumber of Copies, x Total Cost, C500 $2521000 $3521500 $4522000 $5522500 $652
D
C = 52 + 0.20xNumber of Copies, x Total Cost, C500 $1521000 $2521500 $3522000 $4522500 $552
13

Solve the equation for x. 2(2x - 4) = 3(x + 4)

A
-4
B
4
C
20
D
6

Did you find these answers helpful?