Question

P(x)=x^3+18x-30 has a zero in tue interval?

Answer 1

the*

Answer 2

plug in x = 1 and x = 2 into the expression
what are the values of P(x)/

if there is a change of sign then you have the required interval

Answer 3

The options they give are
A (0,0.5)
B (0.5, 1)
C (1, 1.5)
D (1.5, 2)
E (2, 2.5)

Im not sure what you mean by sign changes? I thought that was used to determine the max number of zeros