Question

The function y= -0.296x^2 +2.7x models the length x and height y that your sisters rabbit can jump, in centimeters. How high does the rabbit jump? What is the length of the jump?

A: 2.7 cm high; 0.296 cm long
B: 6.2 cm high; 9.1 cm long
C: 4.6 cm high; 6.2 cm long
D: 9.1 cm high; 6.2 cm long

Answer 1

solve for the vertex
\[\left( \frac{ -b }{ 2a },f(x) \right)\]

Answer 2

i put the function into that form?

Answer 3

solve for x first and then use that value to solve for y

Answer 4

the x can be solved by the formula I gave
-b/(2a)

Answer 5

im lost how do i solve for x

Answer 6

please help me!!!!

Answer 7

ok, so here you are trying to find the vertex and the two times when y=0

Answer 8

fortunately the vertex is right between the two time when y=0 and one of these times is at (0, 0)

Answer 9

sorry...but where the h*** do they come up with these questions? who models the jump of rabbit with quadratic equations????? sorry for the rant......(breaths)(calms down)

Answer 10

so find the other solution for 0 = -0.296x^2 +2.7x

Answer 11

i thought i was supposed to graph the formula

Answer 12

0=2.787616

Answer 13

is that x=2.787616?

Answer 14

yes

Answer 15

i dont think i did that right

Answer 16

what did you do?

Answer 17

i added like terms

Answer 18

the easy way to find the other zero is to factor out an x from your original equation
(factor out an x because you know that x=0 is another zero)

Answer 19

0 = -0.296x +2.7

Answer 20

i honestly don't know what i"m supposed to be doing

Answer 21

the answer is 4.6 cm high; 6.2cm long

Answer 22

thanks:)

Answer 23

it isn't 6.2 cm long

Answer 24

it's 6.2 cm high