RECALL FROM OUR PREVIOUS ASSIGNMENT!!
The TREMENDOUS CHALLENGE in this assignment is to NOT SIMPLY ANSWER the questions. In each of the "story problem" questions, you are being asked to SET UP AN ALGEBRAIC EQUATION which can then be solved.
SO, RESIST THE TEMPTATION TO JUST START DOING SOME MATH AND SOLVING EACH PROBLEM. CHALLENGE YOURSELF TO SET UP AN ALGEBRAIC EQUATION.
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I do not get how to do number two
ReplyDeleteI do not get how to set the quation up
ReplyDeleteJamie x is the number of quarters and then multiply it by 0.25. then add 0.1 times 2x then add 0.05 times the quantity x+2 equals 22.60
ReplyDeleteI don't understand problem 3
ReplyDeleteNever mind that last comment
ReplyDeleteTo expand on #2 (quarters, dimes, nickels problem:
ReplyDeleteLet's look at your definitions:
q is the # of quarters
2q is the number of dimes
q+2 is the number of nickels
Soooo, you had your choice of starter equations:
Equation A:
.25q + .10(2q) + .05(q+2) = 22.60
or you could DISTRIBUTE a FACTOR of 100 to both sides and start like this:
Equation B:
25q + 10(2q) + 5(q+2) = 2260
It is important to note that these are EQUIVALENT EQUATIONS, differing only by a factor of 100.
Did this help? Let me know.
Mr. C.
I do not understand how you set that equation up., though
ReplyDeleteTry looking at it from the perspective of “What adds up to $22.60?” We don’t want to sum the NUMBER of coins, we need to sum the VALUE of the coins.
ReplyDeleteIf you have 5 quarters, you have 5(.25) or $1.25, right?
If you have 11 quarters, you have 11(.25) or $2.75, right?
If you have n quarters, you have n*(.25) or .25n, right?
Ca-peesh?? IT ALL ADDS UP!!