A kudzu plant is growing according to a linear growth model. The initial length (month 0) is P 0 = 9 P 0 = 9 inches, and the length after 8 months is P 8 = 49 P 8 = 49 inches.

7

step-by-step explanation:

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

thus, the first answer choice, y = sec x, is the correct one

-3.5 degrees per hour

step-by-step explanation:

find the unit rate:

-12   1/4 degrees           12.25 degrees

= - = -3.5 degrees per hour

      3   1/2 hours               3.5 hours