genyjoannerubiera
23.02.2021 •
Mathematics
Independent Practice
In 2002, the price of mailing a letter was $.34 for the first ounce or part of an ounce and $.21 for each ounce or part of an ounce after the first ounce.
Write a rule to describe the function. How much did it cost to mail a 4-ounce letter?
A.
f(x) = 0.21(x – 1); $.63
B.
f(x) = 0.34 + 0.21x; $1.18
C.
f(x) = 0.34 + 0.21(x – 1); $.97
D.
f(x) = 0.34x + 0.21(x – 1); $1.99
Solved
Show answers
More tips
- S Sport When will the Biathlon World Championships 2011 take place in Khanty-Mansiysk? Answers to frequently asked questions...
- H Health and Medicine Trading Semen for Money: Where Can You Sell and Why Would You Want to?...
- F Food and Cooking Homemade French Fries: The Ultimate Guide...
- H Health and Medicine How to Increase Blood Pressure without Medication?...
- S Style and Beauty Choosing a Hair Straightener: Specific Criteria to Consider...
- F Food and Cooking How to Make Polendwitsa at Home?...
- S Science and Technology When do we change our clocks?...
- L Leisure and Entertainment What to Give a Girl on March 8?...
- F Family and Home Is it Worth Knowing the Gender of Your Child Before Birth?...
- C Computers and Internet Why is Yandex s robot Bless.yandex.ru Important?...
Answers on questions: Mathematics
- M Mathematics Need help asap pls help...
- M Mathematics Pleasee help me with this i’m being timed...
- M Mathematics A student uses the equation y = 3 - 4x to represent a linear relationship. He says the slope is 3 and the x-intercept is -4. How would you help him correct his thinking?...
- M Mathematics Plspls help! substitute x = 2 and y = 4 into the following and evaluate. 8x/y + 2x...
- M Mathematics What is the area of a rectangle if it is 150 miles long and I and 50 miles wide...
- M Mathematics Based on the diagram, which reason justifies this statement? If ∠CEF is complementary to ∠DCF, then∠DCF ≅ ∠FEG.Complements of the same angle are congruent.Complements...
- M Mathematics Please help 20 points...
- M Mathematics Use the distributive property to remove the parentheses -9(6v-3y-4)...
- M Mathematics An online business called Muffins A-plenty started on January 1 of a recent year. The lines in the graph represent the cost function and the revenue function of...
- M Mathematics 26 students, 15 like maths, 13 like english and 9 like neither Find probability that a child is chosen at random and likes english but not maths...
Ответ:
C.
f(x) = 0.34 + 0.21(x – 1); $.97
Step-by-step explanation:
In 2002, the price of mailing a letter was $.34 for the first ounce and $.21 for each ounce after the first ounce. Write a rule to describe the function.
Price = 0.34 + 0.21(x-1) where x is the weight of the item in ounces.
Let +x+ = weight of the letter in ounces
Let +P+ = the price of mailing the letter in dollars
+P+=+.34+%2B+.21%2A%28+x+-+1+%29+
( +x+%3E=+1+ )
A 4-ounce letter costs
+P+=+.34+%2B++%28+4+-+1+%29%2A.21+
+P+=+.34+%2B+.63+
+P+=+.97+
It costs $.97
Ответ:
*6x4=24*