Michael J. answered 02/20/15
Tutor
5
(5)
Teaching You To Write Reports Professionally and Efficiently
Question 1
width = x
length = 2x
You will have two inequalities
2x+2x+x+x ≥60 and 2x+2x+x+x ≤ 240
6x ≥ 60 6x ≤ 240
x ≥10 x ≤ 40
The width must be at least 10 feet.
The width must be no more than 40 feet.
Question 2
We set up two inequalities
0.26x - 10665 > 18598 and 0.26x- 10665 ≤ 36811
0.26x >29263 0.26x ≤ 47476
x > 112550 x ≤ 182600
Their tax income ranges from $112,551 to $182,600.
Question 3
-16t2 + 12t + 1374 = 674
-16t2 + 12t + 1374 - 674 = 0
-16t2 + 12t + 700 = 0
Solve for t using the quadratic formula.
t = (-12 ± √(144 + 44800))/(-32)
t = (-12 ± 219.42)/(-32)
t = -6.48 s
t = 7.23 s
Take the positive value.
Your time is 7.23 s