17. At a grocery 7 packs of milk and 9 bottles of water cost $31.50, while 13 packs of milk and 6 bottles of water cost $39.75. (a) Using m to represent the cost (in dollars) of one pack of milk and w to represent the cost (in dollars) of one bottle of water, write down a pair of simultaneous equations to répresent the information above. (b) Hence, determine: (i) the cost of a pack of milk (ii) the cost of a bottle of water.

17. At a grocery 7 packs of milk and 9 bottles of water cost $31.50, while 13 packs of milk and 6 bottles of water cost $39.75. (a) Using m to represent the cost (in dollars) of one pack of milk and w to represent the cost (in dollars) of one bottle of water, write down a pair of simultaneous equations to répresent the information above. (b) Hence, determine: (i) the cost of a pack of milk (ii) the cost of a bottle of water.

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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Concept explainers

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.

Question

17. At a grocery 7 packs of milk and 9 bottles of
water cost $31.50, while 13 packs of milk and
6 bottles of water cost $39.75.
(a) Using m to represent the cost (in dollars) of
one pack of milk and w to represent the cost
(in dollars) of one bottle of water, write
down a pair of simultaneous equations to
répresent the information above.
(b) Hence, determine:
(i) the cost of a pack of milk
(ii) the cost of a bottle of water.

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