Unit 5 Test Review

Front

What is the equation that represents the total cost of a refrigerator including electricity over n years?

Back

c = 1200 + 78n

Front

What linear inequality represents the spending of a landscaping business on trees and bushes under $1000?

Back

14x + 5y < 1000

Front

Write an inequality representing Mia's situation regarding money from her dad for Spanish Club dues.

Back

10 - 1.50 - 5.75 + 30 + d ≥ 5

Front

In a direct variation, if y=39 when x=3, what is the value of y when x=2?

Back

26

Front

What inequality matches the graph where x is less than -1?

Back

x < -1

Front

Define direct variation.

Back

A relationship between two variables where one is a constant multiple of the other, expressed as y = kx.

Front

What is the formula for calculating total cost including fixed and variable costs?

Back

Total Cost = Fixed Cost + (Variable Cost per unit * Number of units)

Front

How do you represent a situation where total spending must be less than a certain amount?

Back

Using a linear inequality, e.g., ax + by < C.

Front

What does the symbol '≥' mean in inequalities?

Back

It means 'greater than or equal to'.

Front

What is the difference between '>' and '≥' in inequalities?

Back

'>' means greater than, while '≥' means greater than or equal to.