Answer: The break even point is when they have sold 16 books and have made $288
Step-by-step explanation: The costs are modeled in the equation y = 12x + 96. x is the number of books sold.
The earnings are modeled by he equation y = 18x.
Substitute 18x for y and solve for x.
18x = 12x + 96 Subtract 12x from both sides.
6x = 96 Divide both sides by 6
x = 16
Substitute into the original equations to solve for y
y = 12(16) + 96
y = 192 + 96
Y = 288
y = 18(16)
y = 288
Answer:
5q+9
Step-by-step explanation:
6q minus a is 5 q so then it would equal 5q+9
which is 4+5 equals 9
thanks
Combination problem:
1) 30 C 5 = 142506
2) 13 C 4 = 715
We want to find the inverse of
We interchange x and y to get:
We solve for y;
Multiply through by 3
Subtract 1 from both sides:
Therefore the inverse is