The information tells us that this triangle is an isosceles triangle meaning two sides and two angles are congruent. Also, this is not a right triangle as the only isosceles right triangle has a ratio of 1:1:2
Hope this helps!
Your rate of change would be 3/4 lb/week.
You could model this with a linear eq:
y = 8+ 3/4x
59 is a prime number and an odd number, hope this helps!
After 4 years the value of the computer is 818.44