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Joel's family has four more pets than Brian's family. Together the two families have at least 7 pets. Let x represent the number of pets Brian's family has. Which inequality can be used to find the possible numbers of pets Brian's family has?

 

A) x + 4 ≥ 7

B) 2x + 4 ≥ 7

C) 2x + 4 ≤ 7

D) 2x - 4 ≥ 7

E) 2x - 4 ≤ 7

 

 

 

 

The cost in dollars, C, of renting a carpet cleaner is given by the linear equation

 

C = 20 + 25x, where x is the number of days.

 

Use this model to find the cost of renting the unit for 11 days.

A) $245

B) $295

C) $345

D) $425

E) $495

 

 

 

Kevin won six times as many games as Joanne did. Which equation expresses this mathematically?

A) j = 6k

B) k = 6j

C) j + k = 7

D) k - j = 5

E) j = k - 6

 Nov 5, 2019
 #1
avatar+106539 
+2

First one

 

Let x  be the number of Brian's pets

Then x + 4  is the number of   Joe's pets

Together.....the have at least 7 pets

 

So

x + x + 4 ≥  7

2x + 4 ≥ 7

 

Second one

 

Sub 11 in for x  and evaluate

 

 

Last one    

 

B) k = 6j

 

cool cool cool

 Nov 5, 2019

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