The answer is: [D]: "If

= 100, then x = -10"
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This answer, "Answer choice [D]", is the converse of the conditional statement given: "If x = -10, then

= 100 . "
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As such, this is the correct answer choice.
Consider, please, this option.
Note, 1. check was not performed, 2. make design according the local requirements.
Answer:
b
Step-by-step explanation:
Answer:
He bought 6 chairs and 10 tables.
Step-by-step explanation:
x+y = 16
he spent = $1800
1 chair = $50
y chairs = $50y
1 table = $150
x chairs = $150x
so, 150x+50y = 1800
we got two equations :
x+ y = 16
150x+50y = 1800
Using. substitution method,
x+y = 16
so, x = 16-y
Now
150x+50y =1800
or, 150(16-y) + 50y = 1800
or, 2400-150y+50y = 1800
or, 2400-1800 = 150y-50y
or, 600=100y
so, y = 6
now,
x+y = 16
or, x + 6 = 16
so, x = 10