Please check answers
1. Maria has a 25-page manuscript. The equation below shows the relationship between the total cost of editing 25 pages, T, and the cost per page, c, if she gets the 5% discount.
25c - 0.05(25c) = T
Using the equation, what is the best quality of editing that Maria can get done for a maximum of $66.50?
Express proofreading
Basic proofreading
Extended proofreading
Deep editing
2. Which of the following is not equivalent to the formula for the circumference of a circle, C = 2pir ?
C over r equals 2 times pi
C over pi equals 2 times r
C over the quantity of r times pi equals 2
Cr = 2pi
@ms.sue
Oh, I forgot to add the answers, I think 1. is b and 2. is d but I really need help please
2. Cr = 2pi.
C = 2pi/r. Not equivalent.
To solve the first question, we can substitute the given value of T ($66.50) into the equation and solve for the value of c.
Let's do that step-by-step:
1. Start with the equation: 25c - 0.05(25c) = T
2. Substitute T = $66.50: 25c - 0.05(25c) = $66.50
3. Simplify the equation: 25c - (0.05)(25c) = $66.50
This is equivalent to: 25c - 1.25c = $66.50
4. Combine like terms: (25 - 1.25)c = $66.50
This becomes: 23.75c = $66.50
5. Divide both sides of the equation by 23.75 to solve for c: c = $66.50 / 23.75
6. Calculate the value of c: c ≈ $2.80 (rounded to the nearest cent)
Now that we have the value of c, we can determine the type of editing Maria can get done for a maximum of $66.50. However, we need to know the cost per page for each type of editing. If you provide that information, I can help you determine the best quality of editing Maria can get within the budget.
Regarding the second question, let's go through each option and compare it to the formula for the circumference of a circle, C = 2πr:
1. C over r equals 2 times pi:
This is equivalent to C / r = 2π, which is not the same as the formula C = 2πr. So, it is not equivalent.
2. C over pi equals 2 times r:
This is equivalent to C / π = 2r, which is rearranged from the original formula. It is equivalent to C = 2πr (the original formula) since multiplying both sides by π gives C = 2πr.
3. C over the quantity of r times pi equals 2:
This is equivalent to C / (rπ) = 2, which is rearranged from the original formula. It is equivalent to C = 2πr (the original formula) since multiplying both sides by (rπ) gives C = 2rπ.
4. Cr = 2π:
This is already the original formula for the circumference of a circle (C = 2πr). So, it is equivalent.
Therefore, the option that is not equivalent to the formula for the circumference of a circle is the first option: "C over r equals 2 times pi."