Some examples for the formula   The format of the equation that shows you where the vertex is   y = a(x - h)2 + k   Example.  This parabola has a vertex at (3,4).   y = 2(x - 3)2 + 4   Example 2.  This parabola has...

Two sweaters for \$27.04 means each one costs 13.52 (half of the total)   \$13.52 x      6 ______ \$81.12   You are correct.     Or to solve it with algebra   Set up a relationship with the two quanties and an unknown...

One to one   If you can draw a horizontal line that crosses the graph in more than one place, then the function is NOT one to one.  For example, a parabola is a u-shaped graph.  You can cross the graph in two places.  Any straight line is a one to one graph.

t is 4 more than the product of 7 and s   t = 4 + 7s

(2x+1/3)-(x-5/4)=1/2   It looks like there is a confusion about the parenthesis.     Start by distributing the negative sign ("remove" the negative)   2x + 1/3 - x + 5/4 = 1/2   Combine like terms, the x's.   x...

-5(b-4)   -5b + 20 is the answer   Other examples of distributive problems:   2(x+y) 2x + 2y     9(3+2) 27 + 18     -8(x - y) -8x + 8y  (notice that the two negative signs...

The rate is a fraction of cups per people.   10 cups / 4 people   10/4   10/4 is reduced to 5/2.   Sometimes people write the rate as a ratio like this 5:2