Select the histogram that represents the given test scores
1 answer:
You might be interested in
Answer:
A) C(d,m) = 40 + 55d + 0.13m
B) $448
Step-by-step explanation:
Let 'd' be the number of days and 'm' the number of miles driven.
A) The cost function that describes a fixed amount of $40, added to a variable amount of $55 per day (55d) and a variable amount of 13 cents per mile (0.13m) is:
B) If d = 5 and m =600, the total cost is:
The cost is $448.
Answer:
Step-by-step explanation:
- First, let's go over the <em>distributive property </em>in math. When you have any expression within a parenthesis being multiplied by any expression outside a parenthesis, you are distributing the values outside onto the values inside, like so:
⇒
- Hopefully this helps you break down how distribution works, but if you're still having trouble comprehending it, looking at examples will help. Now, back to the problem. Let's try this idea of distribution on the left side of the equation.
- Hopefully you could follow this math, but if not, there are plenty of materials online and in books on this. Be sure to look at those if you still have trouble.
- Now that we have done all the multiplication we can on the left side and only addition and subtraction remain, we can get rid of the parentheses.
- Now let's do distribution for the other side as well. Doing this will help us easily isolate
on one side after.
- Now, using addition and subtraction, let's move all our
- In case you're confused by the last step there, what I did was divide both sides by the coefficient in front of our
- The fraction
is technically correct, but it isn't simplified.
, so