Determine the possible number of negative zeros when f(x)=x^5 - 3x^3 + 2x^2 + 5x - 4

using Descartes' rule of signs

Count the number of sign changes in f(x)

+ \ - / + / + / -

There are 3 sign changes, hence a maximum of 3 possible positive roots

f( - x) = - + 3x³ + 2x² - 5x - 4

count the number of sign changes in f( - x)

- / + / + / - / -

There are 2 sign changes, hence a maximum of 2 possible negative roots

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.