Answer:
C
Step-by-step explanation:
You can see when x is 0 the value of y is 5 so
the y intercept is 5 also from 5 it goes up by
55-5=50 50/5=10
so the slope is 10 so
y=10x+5 or C
Answer:
D
Step-by-step explanation:
Answer:
9
Step-by-step explanation:
First, write the equation.
C(n) = 4 + 3n
We know that C(n) = 31, so we can substitute it.
31 = 4 + 3n
Subtract 4 from both sides to isolate the term with the variable.
27 = 3n
Divide both sides by 3 to get the variable by itself.
9 = n
Answer:
$59.9
Step-by-step explanation:
Given data
let the food cost = x
Tax = 13%
amount of tax= $7.79
Hence,
13% of x= $7.79
=13/100*x= 7.79
=0.13x= $7.79
x= 7.79/0.13
x= 59.9
Therefore the cost of the bill is $59.9