On it ill give you all the details (or just the answer) so you can learn it by yourself
Answer:
Part a) The linear model that shows the salesperson’s total income is equal to

Part b) The total income is 
Step-by-step explanation:
Part a)
Let
k-------> the total sales for the year
y-----> the total income for the year
we know that
The linear equation that represent the situation is

Part b) we have

substitute the value of k in the linear model to find the total income



Answer:
y = 49
Step-by-step explanation:
Given y varies directly as x then the equation relating them is
y = kx ← k is the constant of variation
To find k use the condition y = 21 when x = 6 , then
21 = 6k ( divide both sides by 6 )
3.5 = k
y = 3.5x ← equation of variation
When x = 14 , then
y = 3.5 × 14 = 49
Answer:
13 Nickels and 9 Quarters
Step-by-step explanation:
9 Quarters gives you $2.25
13 Nickels gives you $.65
add both totals and you get $2.90