PLEASE HELP! The cost, in thousands of dollars, of producing x thousands of textbooks is C ()=2+10+30. The revenue, also in thousands of dollars, is R(x) = 4x. Find the profit or loss if 3,000 textbooks are produced. (profit = revenue – cost)

A $21,000 loss
B $57,000 profit
C $3,000 profit
D $57,000 loss

shell's the art director at her local community center. she paid $10 and for each child that attends she earns $4.

for each child she ears $4 that is the slope m = 4

she paid $10, that is the initial amount paid. so 10 is the y intercept b

m =4   and b = 10

y intercept is 10 so the point is (0,10)

we start graph from y intercept (0,10)

slope = 4 . we know slope = rise / run

slope = 4   or 4/1   are same

rise = 4   and run = 1

for rise we move 4 units up and for run we move 1 unit to the right

the graph is attached below

x axis is the number of child she attends

y axis is the amount   she earns