For this case we have a direct variation of the form:
Where "k" is the constant of proportionality. To find it, we use the following data:
Substituting:
Clearing the value of k:
Thus, the direct variation is given by:
For
we have:
Answer:
The value of the direct variation for is: 
Answer: $3.75 + $0.15n ≤ $5.25
Step-by-step explanation:
$3.75 is the cost of the sandwich
$0.15 is the cost for each additional topping
$5.25 is the maximum amount you can spend
Ask yourself, how many additional toppings can you add before going over the total of $5.25. Since we don't know this value, it's a variable, n.
4) the distance between the x-values is 3 and the distance between the y-values is 4
3² + 4² = d²
9 + 16 = d²
25 = d²
√25 = d
5 = d
Answer: C
6)
d = 
d = 
d = 
d = 
d = 
d = 
d = 6.1
Answer: A
Answer:
<1 = 112º
<2 = 68º (given)
<3 = 68º
<4 = 112º
<5 = 112º
<6 = 68º
<7 = 68º
<8 = 112º
Step-by-step explanation:
Supplementary angles add up to 180º. Once you find the measure of <1 and <2, the bigger angle will always be the bigger number and the smaller angle will always be the smaller number from <1 and <2.
There's a better way to explain it but you would need to go to the basics of all angle rules.
