[Question]Carly is overnight shipping some fresh-baked cookies to her grandma. The shipping cost is equal to a flat $5.00 fee plus $0.80 per pound of weight. If the package weighs 5 pounds, how much does Carly pay for shipping?
[Answer]First calculate the weight - based charge by multiplying the package's weight in pounds by the price per pound: 5 pounds * $0.80 / pound = $4.00. Then add the weight - based charge to the flat fee to find the total cost: $4.00 + $5.00 = $9.00. The answer is 9.

[Question]Roberta takes $158 with her on a shopping trip to the mall. She spends $45 on new shoes, $17 less on a new bag, and a quarter of the price of the bag for lunch. How much money does she have left after these purchases?
[Answer]Roberta's bag costs $45 - $17 = $28. Roberta spend $28 / 4 = $7 on lunch. Roberta spend 45 + 28 + 7 = 80 in total. Roberta has $158 - 80 = $78 left. The answer is 78.

[Question]Very early this morning, Elise left home in a cab headed for the hospital. Fortunately, the roads were clear, and the cab company only charged her a base price of $3, and $4 for every mile she traveled. If Elise paid a total of $23, how far is the hospital from her house?
[Answer]For the distance she traveled, Elise paid 23 - 3 = 20 dollars. Since the cost per mile is $4, the distance from Elise’s house to the hospital is 20 / 4 = 5 miles. The answer is 5.

[Question]Barbeck has two times as many guitars as Steve, but Davey has three times as many guitars as Barbeck. If there are 27 guitars altogether, how many guitars does Davey have?
[Answer]
Let x = the number of guitars Steve has. Barbeck has 2x guitars, and Davey has 3 * 2x = 6x guitars. 2x + 6x + x = 27. 9x = 27. x = 27 / 9 = 3 so Steve has 3 guitars. Barbeck has 2 * 3 = 6 guitars. And Davey has 3 * 6 = 18 guitars. The answer is 18.