Answer:

( x - 7)^2=1

Step-by-step explanation:

Starting with a $0 balance, we have:

$0.00 + $80.00 = $80.00

After the grocery store:

$80.00 - $25.50 = $54.50

After the paycheck deposit:

$54.50 + $650.00 = $704.50 total balance.

Two lines are perpendicular if and only if the product of their slopes is - 1.

So, you just need to find the slope of each line and find out the product of their slopes.

I will do one example for you.

L1: y = 3x + 5

L2: y = - 3x + 14

L3: y = -x/3 + 14

The slope of a line is the coefficient of the x.

So the slopes are:

L1: slope 3

L2: slope -3

L3: slope -1/3

So now multiply the slopes of each pair of lines:

L1 and L2: 3 * (-3) = - 9 => No, they are not perpendicular

L2 and L3: (-3) * (-1/3) = 1 => No, they are not perpendicular

L1 and L3: (3) * (-1/3) = -1 => Yes, they are penpendicular.

**Answer:**

21.5%

**Step-by-step explanation:**

60 and 112 repsectivly

60x(1.15) + 112(1.25)

69 (hehe nice) + 140

so 209 total honour roles compared to 172 last year

209/172 = 1.215116

subtract 1

.215116

multiply by 100

21.5116%

21.5%

- Gage Millar, Algebra 2 Tutor