Answer:
x = 7 / 2
Step-by-step explanation:
5(2x - 9) + 3 = -7 ---------- subtract 3 from both sides
5(2x - 9) + 3 - 3 = -7 - 3
5(2x - 9) = -10 ------ divide both side by 5
2x - 9 = -2 ---------- add 9 to both sides
2x - 9 + 9 = -2 + 9
2x = 7
x = 7 / 2
Use the distance formula!
d = square root of (x2-x1)^2 + (y2-y1)^2
=19.4165
Total Cost in a day is

. Profit function is

. And the revenue function is

. In a day, bookstore must sell at least 15 books, because of 6n-90=0, in order to make profit.
Answer:
Three ways to write 5^11
In product:48828125
In powers:

5 to the power of 11
Step-by-step explanation:
I learned this before in class like few years ago
B) 43 because they increase 3
c) 32 because they decrease 7