Final answer:
Emily will spend $8.80 on wire for 22 feet and Andy will spend $18 on wire for 45 feet.
Step-by-step explanation:
To find out how much Emily will spend on wire, we need to look at the table that shows the relationship between the cost and the length of wire. Since Emily needs 22 feet of wire, we can find the corresponding cost for that length. According to the table, 20 feet of wire costs $8. So, we can use this information to calculate the cost of 22 feet of wire.
First, we can find the cost of 20 feet of wire by dividing the length by the cost. 20 feet of wire costs $8, so each foot costs $8/20 = $0.40. Next, we can calculate the cost of 22 feet of wire by multiplying the cost per foot by the number of feet needed. $0.40 x 22 = $8.80.
Therefore, Emily will spend $8.80 on wire.
For Andy, we need to convert the yards to feet. Since there are 3 feet in 1 yard, we can multiply the number of yards by 3 to get the number of feet. Andy needs 15 yards of wire, so he needs 15 x 3 = 45 feet of wire.
Using the same calculation method, we can find the cost of 45 feet of wire. According to the table, 40 feet of wire costs $16. So, we can find the cost per foot by dividing the cost by the length: $16/40 = $0.40. Finally, we can calculate the cost of 45 feet of wire by multiplying the cost per foot by the number of feet: $0.40 x 45 = $18.
Therefore, Andy will spend $18 on wire.