13. The formula V = expresses the relationship between the volume V and radius r of a sphere. A weather balloon is being inflated so that the radius is changing with respect to time according to the
equation r = t + 1, where t is the time, in minutes, and r is the radius, in feet.
Find the volume of the balloon after 5 minutes. Round the answer to two decimal places. Use 3.14 for a.
(SHOW WORK.)

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

In which form is the following function written? y = - 2(x – 3)(x + 5)

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.