Answer:
$50
Step-by-step explanation:
To get previous prices, divide by what you would have multiplied to get the next price. X*.70 (that’s 30% off)=21. So... 21/.70=X. Repeat for each price change... (((21/.7)/.75)/.8)=$50.
Answer:
a
Step-by-step explanation:
Find the slope
we take the points
(75,2.3) and (82,3)
so
m=(3-2.3)/(82-75)
m=0.7/7
m=0.1
the units of the slope are grade-point averages by entrance exam scores
1. Let x = #
2. "Five less than six times a number" can be written as: 6x - 5
3. "is at least" is the same as "greater than or equal to" and can be written as: >=
4. "nine subtracted from two times that number" can be written as: 2x - 9
5. the equation is: 6x - 5 >= 2x - 9
6. solve for x by grouping the x variable terms on one side and the constants on the other side:
6x - 5 >= 2x - 9
-2x +5 -2X +5
4x >= -4
7. divide each side by 4, and you get: x = -1