<span> the answr is 412 and 319/500</span>
Answer:
Step-by-step explanation:
If y varies directly as x, then we can write the relation
where k is the constant of proportionality.
We substitute y=-319 when x=29.
This implies that:
The variation equation now becomes
Take 87-63 = 24, which is the difference of the 2 hours. Divide this by two to get the hourly rate, which is $12.
We can now set up the equation as follows:
4(12) + x = 63
6(12) + x = 87
Now solve for each:
4(12) + x =63
48 + x = 63
x = $15
6(12) + x = $87
72 + x = 87
x = $15
Therefore, the Flat Fee = $15 and the Hourly rate = $12
This is simple:
divide 15 by 5 = 3 then divide .6 by 5 = 0.12
Add them together: 3.12 is your answer.
Answer:
B.
Step-by-step explanation:
y = x^2 - x - 12
y = (x-4)×(x+3) that means x it either 4 or -3
y = x + 3
for x = 4 ➡ y = 3+4 ➡7
for x = -3 ➡ y = -3 + 3➡0
(the answer key is most probably faulty there's no way for y to be 0 in both scenarios)
