The answer is B. Carlos worked two hours and earned $20
Answer:
X from 0 to 21
Y from 0 to 7
Z from 0 to 3
Step-by-step explanation:
Since we are being asked by the integration limits in first octant (positive x, positive y and positive z) we need to know where does the plane intersect this axes. For this we have:
for x=0 and y=0
7z=21
z=3
for x=0 and z=0
3y=21
y=7
for z=0 and y=0
x=21
This means that the integration limits are:
X from 0 to 21
Y from 0 to 7
Z from 0 to 3
A) 2007
b) 120
c) the donations are decreasing as years increase
Y= 3 - 3x/2
Y+6= - 3/2 (x-6)
3x+2y-6=0
Y intercept 3
X intercept 2
