A new cell phone has a purchase price of $225. With the extended warranty, the total cost comes to $289. What percent of the purchase price is the price of the warranty?
a. 28%
b. 22%
C. 25%
d. 20%

Which linear inequality is represented by the graph?

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x,y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis

In the figure below, m∠r is 60°, and m∠t is 120°. what is m∠q? a. 60° b. 30° c. 120° d. 54