Savannah manages a store that sells cell phones. Each Thumper takes 39 hours to create the plastic pieces, 9 hours to create the electronics, and 73 hours of labor to assemble the final product. Each XL2000 requires 13 hours to create the plastic pieces, 27 hours to create the electronics, and 53 hours of labor to assemble the final product. The factory has 3627 hours to create the plastic pieces, 3267 hours to create the electronics, and 7907 hours of labor to assemble the final product each week. If each Thumper generates $7 in income, and each XL2000 generates $2, how many of each of the cell phones should Savannah have the store sell each week to make the most income?

Thumper:

XL2000:

Best income: