Answer:
150
Step-by-step explanation:
1) the full volume of the given pyramide may be calculated according to the formula:
V=1/3 *Area_of_base*height;
V=1/3 *(5*15)*12=300 (in³).
2) the half of the calculated volume is:
300/2=150 (in³)
Find

by plugging in 1 into n:

Find

by plugging in 11 into n:


Now to find the sum your formula is:


Now plug that into the formula


Hope that helps
Answer:
Find the rate of change by dividing the value of one term by the value of the preceding term, in your problem:
$15/$10 = 3/2 or 1.5, this is your rate of change
1.5 ($15) = $22.50
Step-by-step explanation: