Question

A 2-mi cab ride costs $5.25. A 5-mi cab ride costs $10.50. How much does a 3.8-mi cab ride cost?
A. $14.00
B.$10.75
C.$8.40
D.$6.30

Answer 1

I would go about solving this by first finding how much it costs fir 1 mile of a cab ride. So divide 5.25 by 2.

Answer 2

Once you have figured out how much it is for 1 mile, you can multiply that number by how many miles you have. Tell me what you get and how and I will check your work

Answer 3

Igreen dont jack the post again lol

Answer 4

I see you lurking

Answer 5

i tried but if you multiply the cost for one mile by 5 to get the 5 mile then its wrong

Answer 6

First divide 5.25 by 2 and tell me what you get

Answer 7

JUST SPYING! AHAHAHAHAHAHAHA!

Answer 8

5.25 divided by 2 is 2.625. but like i said 2.625x5 is 13.125. so if i multiply it by 3.8 ill get 9.975 which is wrong because the 5 mile is wrong.

Answer 9

Hold up, you went ahead and in the wrong direction. The beginning as good. You found out for 1 mile of a cab ride it costs $2.625

Answer 10

the 9.975 is correct

Answer 11

Oh okay this is a completely different problem then I thought, it actually has different costs for different mileages.. Sooo Write a linear equation using the given values as follows
x1 = 2; y1 = 5.25
x2 = 5; y2 = 10.50

Answer 12

but thats none of the options. and how can that be correct if when you multiply the 1 mi by 5 to get the 5 mi its wrong

Answer 13

Find the slope using slope formula (y2-y1)/(x2-x1)

Answer 14

Use the point/slope equation: y - y1 = m(x - x1)
y - 5.25 = 1.75(x - 2)
y - 5.25 = 1.75x - 3.5
y = 1.75x - 3.5 + 5.25
y = 1.75x + 1.75; the equation
;
Find the cost of a 3.8 mi cab ride, substitute 3.8 for x and find y
y = 1.75(3.8) + 1.75
y = 6.65 + 1.75
y = $8.40 for 3.8 mi ride