8 Answered Questions for the topic Modeling Linear Systems

Modeling Linear Systems

03/09/17

f(x)=|x+4| f(x) = -2x^2 - 3x+8
Hi, I have the problem f(x)=|x+4| f(x) = -2x2-3x+8. While I understand the basic concept on what's being solved for, I don't understand how to do so.   Could someone please explain this to... more
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Modeling Linear Systems

03/09/17

What makes |x-7| x >/= 4 turn upwards?
Hi,   I have the problem -1/3x-4, x<3  |x-7| x > 4. When my teacher graphed the second function, the x-intercept was at 7, with y-intercept 0, of course, but it went in a v-shape at an x... more
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Modeling Linear Systems Algebra Linear Equations Linear Systems

10/15/15

Linear Systems Word Problem
Josie wants to buy Internet access. One service provider charged a flat rate of $34.95/month. A second charges $25/month plus $0.33/hour. For what number of hours per month should Josie choose the... more
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Modeling Linear Systems

10/15/15

Modelling Linear Systems
It took a patrol boat 5 hours to travel 60km up a river against the current, and 3 hours for the return trip with the current. Find the speed of the boat in still water and the speed of the current.
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Modeling Linear Systems

10/15/15

Modelling Linear Systems, using Volume, Percentage and mL
What volume, in millilitres, of 60% hydrochloric Acid sol. must be added to a 100mL of a 30% hyrdrochloric acid sol. to make a 36% hyrdrochloric acid sol.?
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Modeling Linear Systems

10/15/15

Modelling Linear Systems with Distance, Speed and Time
Kareem took 5 hours to drive 470km from Sudbury to Brantford. For part of the trip he drove at 100km/h. For the rest of the trip he drove at 90km/h. How many kilometres were driven at each speed?
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Modeling Linear Systems

08/03/14

A company's employees can complete up to 17 arrangements each day using up to 32 total person-hrs of labor.
It takes 4 person-hrs to complete 1 funeral wreath and 1 person-hr to complete 1  bridal centerpiece How many of each type of arrangement should the florist produce daily to maximize profit if the... more
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Modeling Linear Systems

08/01/14

A total invetment of 10,700 is made into 2 savings accounts. One yields 7% simple interest and the other 9% simple interest.
The investor earns a total of $891.00 interest for the year. How much was invested in the 7% account?
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