Answer: $700
Step-by-step explanation:
The store is selling at 30% off.
If a mattress is $1,000, first find out what 30% of $1,000 is:
= 1,000 * 30%
= $300
The store is selling 30% off, this means that they are reducing the price by 30%:
= 1,000 - 300
= $700
Answer
at first I said 1/2 but it's 2/5's.
Step-by-step explanation:

Plot the equation. If you wish to solve a polynomial, let y= polynomial and plot the graph. Best set up a table of values first.
Where the graph crosses the x axis there is a solution for x. There are also solutions for other horizontal lines (y values) by looking at intersections of the graph with these lines. This technique works for linear and non linear equations. You can also use graphs to solve 2-variable systems of equations by examining where the graphs intersect one another. The disadvantage is that you may not be able to have sufficient detail for high degrees of accuracy because of the scale of the graph and drawing inaccuracies.
Answer:
48x⁷ - 64x + 9
Step-by-step explanation:
Step 1: Write out expression
4x(12x⁶ - 4²) + 9
Step 2: Evaluate exponent
4x(12x⁶ - 16) + 9
Step 3: Distribute
48x⁷ - 64x + 9