If x+y=15 and x-y=25, then what is the value of 2x^2 - y^2?
a) 425
b) 775
c) 825
d) 1,575
e) 1,625

Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9

The only way to identify an intercept is as an ordered pair. true false

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?