Originally Posted by
white hello i need help on a few quesitons.
the straight line with equation ax+by=c passes through the points (2,4) and (-3,1). find the values of a,b,c.
Mr F says: There's not enough information to get unique numerical values of a, b and c. There's an infinite number of possible solutions. The best that can be done is to express two of a, b and c in terms of the third.
Note: One of the infinite number of possible solutions is a = 5, b = 1, c = 14 (Given by Air). Another is a = 10, b = 2, c = 28 .......
wheel rite, a small company that manufactures garden wheelbarrows, has overhead expenses of $30 000 per year. in addition, it cost $40 to manufacture each wheelbarrow
a- how many wheelbarrows must be made so that the overall cost is $46 per wheelbarrow?
Mr F says: Cost to make x wheel barrows is 30,000 + 40x. Therefore overall cost per barrow is (30,000 + 40x)/x. Solve (30,000 + 40x)/x = 46 ........
b- what is the minimum number of wheelbarrows that must be produced for wheel rite of make profit each year?
Mr F says: Are you selling at $46 per barrow? Then solve 46y > 30,000 + 40y for the smallest integer value of y. Note: You break even when y = x (the answer to a).
thank you in advance