The angle measures of quadrilateral rstu are shown.

m∠r = (2x)°

m∠s = (3x – 35)°

m∠t = (x + 35)°

the measure of angle u is unknown. can quadrilateral rstu be a parallelogram?

Tom drove 206 miles in 3.9 hours. estimate his average speed.

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?