Answer:
x = 7
Step-by-step explanation:
-4x/-4 = -28/-4
x = 7
Multiplying a negative number and another negative number makes the product positive.
So (-2.1)*(-1.4) = 2.94
Answer:
(-4,-4)
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given that a company fixed costs are 400 dollars
and variable cost =
per unit and x the no of units produced
Selling price =
per unit
a) Break even units
At break even units selling price = variable cost

Break even units = 76
b) Revenue = Sales - total costs
= 
Use derivative test to get max revenue
R'(x) = 
R"(X) <0
So maximum when I derivative =0 or when

x=38
c) price when x =38 is

Answer
4.25
Step-by-step explanation:
She would have baby sat for 4 hours and 15 minutes.
the 15 minutes comes in when we have the .25 because 1/4 of an hour is 15 minutes.
we can check this if we do 38.25 divided by 4.25 and we get 9.