SOLUTION: Suppose y = mx + b is a math model for actual time as a function of estimated time, where y represents actual time and x represents estimated time and m and b are constants. If m

Question 567622: Suppose y = mx + b is a math model for actual time as a function of estimated time, where y represents actual time and x represents estimated time and m and b are constants. If m = 2.8 and b = -2.6, find y when x is 30 min.
My answer = 22.72 min
Thanks again!
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Suppose y = mx + b is a math model for actual time as a function of estimated time, where y represents actual time and x represents estimated time and m and b are constants. If m = 2.8 and b = -2.6, find y when x is 30 min.
My answer = 22.72 min
--------------
y = mx + b
y = 2.8x - 2.6
-----
@ x = 30, y = 2.8*30 - 2.6
y = 81.4

RELATED QUESTIONS
In a chemistry class, the students in lab derived a function to model the results of... (answered by greenestamps)

In a chemistry class, the students in lab derived a function to model the results of... (answered by MathLover1)

A candle is 8 inches tall after burning for 1 hour. After 3 hours it is 5.5 inches tall. (answered by jim_thompson5910)

The annual revenue of Amazon.com rose from approximately $10.7 billion in 2006 to $34.2... (answered by Boreal)

From 2000 through 2014, the percentage of Americans living below the poverty level is... (answered by josgarithmetic)

The size of an insect population is given by the model where represents (answered by stanbon)

Since 1950, the world population has risen from 2.5 billion at a rate of 1.8% per year.... (answered by greenestamps)

Fitting a quadratic model to data Throughout the twentieth century, the eating habits of (answered by stanbon)

The graph shows a relationship between the number of pages printed by a printer and the... (answered by greenestamps)