A certain evergreen tree grows, on average, to a height of 21 feet. The height of the tree is given by h = 5t - 0.30t, where t is the age of the tree in years. a. Find the height of the tree when the tree is five years old. Round your answer to two decimal places.

Answer =
feet

b. Find the height of the tree when the tree is nine years old. Do not round your answer.

Answer =
feet

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.