Nancy Carted the year with S425 in the bank and is saving $25 each week. Sam started the year with $705 but is spending $15 a week. Write a system of equations that model the following samution. Define cach variables with a "Let" statement, write two equations, and solve completely
Let =
Let y =
Nancy:
Sam:

The images show two species of tree frogs in a particular region. the gray tree frogs are adapted to the trees of the woodlands, while the green tree frogs can survive in woodlands or grasslands. the gray frog was abundant in the woodlands. because of climatic changes, most of the trees in the region died, and the woodlands changed to grasslands. in such a case, the . the gray tree frog is closely related to the green tree frog genetically, but they have different mating calls. this suggests that speciation occurred because of .