Step-by-step explanation: 3(x-1) becomes 3x -3 ≤ 4x. Put all like variables on the same side, meaning you'll subtract 3x from both sides giving you -3 ≤ x. You can flip the equation around to make it look exactly like x ≥ -3
3 1/2 pound = 7/2 pounds. We know that the dog eats 7/2 (3.5) pounds every 21 days since there are 7 days in a week and Mr.Z only buys dog food every 3 weeks.
Set up a proportion. <u>3.5 lb</u> = <u> x </u><u> </u> 21 days 365 days <u> </u>Cross multiply and divide. 3.5 lb x 365 days = 1277.5 / 21 days = 60.83 lb <u> </u>