Question

y=-2375x+18000 at what value of x would y be less than 1400.

Answer 1

is that 14000 or r u sure about 1400.

Answer 2

Set y as 1400 and solve for x
1400=-2375x+18000
2375x=16600
x=7
Since the slope is negative, x has to be greater than 7 (if you draw the graph you will see)

Answer 3

When will be y = 1400 ?

first of all , let y =1400

1400 = -2375x + 18000

1400 - 18000 = -2375 x

x = -6.98

so at x = -6.98 (approx. => x = -7) y will be 1400

Answer 4

at -6.97 y < 1400.

Answer 5

May be I am wrong .. satellite73 may correct me

Answer 6

You could also arbitrarily plug in points greater or less than 7 and less than 7 to check the solution

Answer 7

I meant x = 6.98 there

Answer 8

mathslover, the answer would round up anyways, even at 2 significant digits. anyways i already posted the solution

Answer 9

thanks .

Answer 10

my text book gives x=8