The mosaic had a 7 x 7 array of different color square tiles. if each tile is 3 1/2 ft long, what is the area of the whole mosaic?

Agiven line has the equation 2x + 12y = −1. what is the equation, in slope-intercept form, of the line that is perpendicular to the given line and passes through the point (0, 9)? y = ( )x + 9

Question 10jur's car can travel 340 miles on 12 gallons. jack's car can travel 390 miles on16 gallons. which person has the best mileage (miles per gallon) and what istheir mileage?

Having a hard time understanding this question (see attachment).