Mr. abernathy purchases a selection of wrenches for his shop. his bill was $78. he buys the same number of $1.50 and $2.50 wrenches, and half that many $4 wrenches. the number of $3 wrenches is one more than the number of $4 wrenches. how many of each did he purchase?

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.