Find the unit rate. Round to the nearest hundredth, if necessary. $380 for 18 ft2 i'm in 7th grade btw so this is 7th grade mat help ASAP plz and thanks !! <3

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Laura read 1/8 of a comic book in 2 days. she reads the same number of pages every day. what part of the book does she read in a week