Janice earns a 4 percent commission for the medical equipment that she sells. If she earned $1,823.94 in commission on the digit
2 answers:
Answer:
The cost of the machine was $45,598.50.
Step-by-step explanation:
Janice earns 4% commission for the medical equipment that she sells.
She earned $1,823.94 in commission on the digital x-ray machine that she sold.
Let the value of x-ray machine be x
4% of x = $1,823.94
of x = 1,823.94
x = 1,823.94 ÷ 0.04 = $45,598.50
The cost of the machine was $45,598.50.
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Answer:
(-1, 6)
Step-by-step explanation:
A graphing calculator shows the vertex to be (x, y) = (-1, 6).
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You can also find it by putting the equation into vertex form.
y = -2(x^2 +2x) +4
y = -2(x^2 +2x +1) +4 +2(1) . . . . . add 1 inside parens; the opposite outside
y = -2(x +1)^2 +6
Compare to ...
y = a(x -h)^2 +k
and you see a=-2, h=-1, k=6
The vertex is (h, k) = (-1, 6).
