Not knowing what you want, I'll arbitrarily choose to focus on the word problem:
Find the total cost of the blazers and pants, including the tax.
2 blazers @ $49.95 each comes to $99.90.
3 pair pants @ $17.50 each comes to $52.50.
Add these two products together: $99.90 + $52.50 = $152.40
Now mult. this result by 0.055 to find the sales tax: 0.055($152.400) =
$8.38
Finally, add together the purchase cost total and the sales tax:
$152.40 = $8.38 = $160.78 (answer)
You actually posted 3 problems, but not the instructions for the last two of them. That's why I focused on the word problem alone.
Answer:
18] not a function; (1, 5), (1, -1)
19] is a function
Step-by-step explanation:
The graph of a function will pass the "vertical line test." That is, a vertical line will not intersect the graph at more than one point.
18] There are an infinite number of points where a vertical line will cross the graph twice. Two that are recognizable are the ones at the vertical extremes: (1, 5) and (1, -1). This relation is not a function.
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19] None of the points on the graph are vertically aligned, so the relation is a function.
Answer:
The value of the proportionality constant (y to x) is: 3/10
Step-by-step explanation:
We know the slope of any graph where 'y' varies directly with 'x' gives us the constant of proportionality 'k'.
i.e. y = kx
and k = y/x
Given the points
We know that the proportionality constant (y to x) is:
k = y/x
For the point (100, 30)
k = 30/100=3/10
For the point (300, 90)
k = 90/300=3/10
For the point (500, 150)
k = 150/500=3/10
As the value of proportionality constant (y to x) is the same.
i.e. k = 3/10
Thus, the value of the proportionality constant (y to x) is: 3/10
The tax added to $220 is solved by 220 X .0725 = 15.95. Add 15.95 to $220 and get $235.95. The tip (assuming it is 20% after tax ) is $235.95 X .20= $47.19
Add the $47.19 to $235.95= $283.14
Answer:
Landing on Blue: Likely
Landing on Green: Impossible
Landing on Yellow: Unlikely
Step-by-step explanation:
Blue: 50% chance
Green: 0% chance
Yellow: 12.5% chance