Answer:
Helena is correct.
Step-by-step explanation:
The slope intersept form of the line is
y = m x + c
where, m is the slope and c is the intersept.
The point slope form of the equation is

So, if there are two points are given, the equation of line is found by the point slope form.
So, Helena is correct.
Answer:
units.
Step-by-step explanation:
The given functions are:

and

The function
has y-intercept ,
.
The function
has y-intercept, 
If we shift the graph of g(x) up to obtain f(x), then the y-intercept must move from
to
.
This means that the graph will move up by;
units.
Answer: the radius is 0.81
Keep on dividing them both by 2
Answer:
s = 10k + 30
Step-by-step explanation:
Cost of Adults ticket = $10 per adult
Cost of Ticket = $6 per child
Number of adults = k
Number of Children = 5
s = Total cost
Total cost = (Cost per adult * number of adults) + (Cost per child * Number of children)
s = ($10 * k) + ($6 * 5)
s = $10k + $30
s = 10k + 30