Wednesday

July 30, 2014

July 30, 2014

Posted by **snow** on Friday, March 14, 2014 at 1:11pm.

Answers are

C =1.44 d +4.40

C=1.10 c +4.40

C=1.29 d+1.70

C=1.10 d +1.70

Thanks

- algebra -
**Steve**, Friday, March 14, 2014 at 1:17pmIf the formula is c=ad+b, then

5a + b = 7.20

9a + b = 11.60

Solve for a and b.

Or, note that as the distance increased by 4, the cost increased by 4.40

So, the slope is 1.1

That eliminates two of the choices right away. Now just see how much extra there is in each case when multiplying the distance by 1.1

- algebra -
**snow**, Friday, March 14, 2014 at 3:36pmWould the answers be c=1.10c+4.40

- algebra -
**Steve**, Friday, March 14, 2014 at 4:19pmummm. No

1.1(5) = 5.5

5.5+1.7 = 7.2

c = 1.1d + 1.7

Did you even try your formula against the data?

**Related Questions**

ALGEBRA - A 5-mile cab ride costs $9.30. A 11-mile cab ride costs $17.70. Find a...

Math - A 3-mi cab ride costs $4.50. A 7-min cab ride costs $8.10. Find a linear ...

algebra 3-4 - a 3 mile cab ride cost $7.00. A 7 mile cab ride cost $11.50. Find ...

algebra - A 3-mi cab ride costs $3.00. A 6-mi cab ride costs $4.80. Find a ...

Math - A 3-mile cab ride cost $3.00. A 6-mile cab ride cost $4.80. Find a linear...

help - a 2-mi cab ride costs $4.25. a 7-mi cab ride costs $8.50. which equation ...

Math - An average cab ride is 7.3 miles. The cost is $3 for the first mile and $...

algerbra - A ride in a cab costs $0.40 plus $0.15 per mile. a.Write an equation ...

Intermediate Algebra - The average cab ride cost per mile(x) is given by f(x)=2x...

verbal linear equations - a taxi costs $2.75 for the first quarter of a mile ...