In a swimming competition, grace jumped from the height of 22 meters. the following table represents the height f (t), in meters, at time t seconds. time (t) (in seconds) height f(t) (in meters) 1 25 2 20 3 15 4 0 which of the following represents the x-intercept of f(t)? grace reaches the swimming pool after 4 seconds. grace reaches a maximum height of 25 meters. grace reaches the swimming pool after 1 second. grace reaches a maximum height after 20 seconds.

For this case we have the following variables:

t: time in seconds.

f (t): height as a function of time.

By the time Grace reaches the pool, the height is equal to zero.

We have the following table:

Time (t) (in seconds) Height f(t) (in meters)

          1                                   25

          2                                  20

          3                                   15

          4                                   0

We observe that the height is equal to zero after 4 seconds.

Equivalently:

the following represents the x-intercept of f(t):

Grace reaches the swimming pool after 4 seconds

50=33x+22

step-by-step explanation:

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500