What do the brackets around a negative number mean

You bought 15 one gallon bottles of apple juice for a school dance. The apple juice was on sale for $1.50 per gallon bottle. The orange juice was $2 per gallon bottle. You spent $26. Write algebraic models for the situation.

8a + 12a - 7b - 9b - 11a How to combine like terms

Use pi = 3 calculate the area of a circle with diameter of 16m

How do i do this problem 6 5/12 - 2 1/12

L (d) = 55+d what is the length after 13 days?

Solve the equation using the quadratic formula: 2x^2-5x+2=0

Convert the measurement as indicated 53qt = __ gal __ qt

Which number is the greatest absolute value? Pick an answer: - 12,10,-8, or 6

What is 5 days 6 hours 20 minutes minus 3 days 8 hours 40 minutes

Which of the following is a result of shifting a circle with equation (x + 3) 2 + (y - 2) 2 = 36 up 3 units? A. The x-coordinate of the center of the circle increases by 3. B. The y-coordinate of the center of the circle decreases by 3. C.