Answer:
Return trip travel time: 7h
Step-by-step explanation:
Let d be the distance.
Index 1 refers to initial trip, index 2 refers to the return trip.
v1=70mi/h
v2=40mi/h
t2=t1+3h, or t1=t2-3h (travel times)
d=v1×t1=v2×t2
v1×(t2-3)=v2×t2
v1 t2 -3 v1=v2 t2
v1 t2 - v2 t2=3 v1
t2(v1-v2)=3v1
t2=3v1/(v1-v2)
Or
t2=3×70/(70-40)=3×70/30=7h
Answer:
The slope is -2
Step-by-step explanation:
(0,4) (3,-2)
remeber the equation is Y2-Y1/X2-X1
Y2 = -2
Y1 = 4
X2=3
X1=0
Plug it in the euqation to see if it works
I believe you can use ratios and multiply both of them like fractions to get the same amount of bottles and compare the prices fairly.
2:8 = 2/8
1.5:3 = 1.5/3
(2/8)3 = 6/24 or $6 per 24 bottles
(1.5/3)8 = 12/24 or $12 per 24 bottles
In conclusion, the latter ($1.50 for 3) costs more than the $2 per 8.
The best answer of multiplier is B
