Set t=0 so
x²-1936=0
(x-44)²=0
x=44 phones he must cell to break even
Brianna's thinking is wrong because obviously all of the expressions are going to equal -4 when x is 0 because -4 would be the only value. Also, if x was a different number, the expressions wouldn't be equivalent. The equivalent expressions are A. 9x - 3x - 4, and C. 5x + x - 4. This is because when both are simplified, they equal 6x - 4.
Answer:
(a)
A to B to C =40 yards
(b)
w<40
Step-by-step explanation:
We are given
The distance between point A and point B is 15 yards
AB=15 yards
The distance between point B and point C is 25 yards
BC=25 yards
(a)
A to B to C = AB+BC
A to B to C =15+25
A to B to C =40 yards
(b)
direct distance between A to C or AC
It must be less than distance between A to B to C
AC< AB+BC
AC< 15+25
AC< 40 yards
w<40
