80123.00 in scientific notation then rounded up to 3 sig figs

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

Which two body systems, when working together, give your body shape and allows you to move around, like the boy seen here? a) muscular and skeletal b) digestive and skeletal c) skeletal and circulatory d) cardiovascular and skeletal

Deanna wants her friends to meet up at the movies for her birthday. she posts a status update without using her privacy settings, "can't wait to celebrate with my girls," and checks in at the theater. her post