Question

Determine the range of f if f(x)= 2x^2+5x-3

Answer 1

all real numbers

Answer 2

how do u write that in interval notation

Answer 3

[-inf,inf]

Answer 4

says tahts wrong

Answer 5

thats the domain

Answer 6

yes thats the domain - sorry whats the range then - ill check that out

Answer 7

yea i need the range please. I dont know it

Answer 8

its x vertex : -b/2a = -5/4
so its y vertex : 2*(-5/4)^2 + 5*(-5/4) -3 = -6.125

since a (2) is positive the parabola is concave upwards .. so -6.125 is the smallest y possible.. (minimum point)
[-6.125,infinity]

Answer 9

i think it may be wrong

Answer 10

[-6.125,infinity)

Answer 11

ya its still wrong i think

Answer 12

nope

Answer 13

idk then it gives me lots of questions in one and wont tell me whch one is wrong

Answer 14

post the questions