Read the paragraph. long ago people made buildings by fitting boards together. then they learned to shape metals. the invention of nails followed. which word does the underlined prepositional phrase modify? a. the verb made b. the noun people c. the verb learned d. the noun buildingscan some one me its  language arts

An electric power distributor charges residential customers $0.10 per kilowatt-hour (kwh). the company advertises that "green power" is available in 150 kwh blocks for an additional $4 per month. (green power is generated from solar, wind power, and methane sources.) if a certain customer uses an average of 391 kwh per month and commits to one monthly 150 kwh block of green power, what is her annual power bill