Greetings.....
21-y
would be your algebraic expression...
Note.....If your wondering why its not y-21 instead, read below for clarification...
Up above it stated Y is less than...
What are they saying.. well, there basically saying the algebra variable ( in other words, the letter y) is LESS THAN 21.
Since its LESS than 21....221 is GREATER... So...
can you subtract y from 21 if its less?
NO
Can you subtract 21 from Y because y is less?
YES!
Hope this made sense!
~Queen Hanaenae
It can't be A, B, nor C because some of the equations wouldn't have a straight line if displayed in a graph. For example A has a square root symbol and b and a have an exponent they would create a perebula where that would mean the equations would not make a straight line. However, Choice d doesn't have any exponents, or square root symbols meaning the equation could slope up or down in a STRAIGHT line in a graph.
The total cost of rice and beans bought by Gabriel is 6b + 4r.
The simplified expression of the final cost is 4b + 3r.
<h3>What is simplification?</h3>
Simplification can be defined as a process of replacing a mathematical expression by the cancellation of common factors, regrouping of terms in the same variable to get the more simple form of the given expression.
Given that
6b + 4r represents the total cost of the rice and beans Gabriel bought.
He returns 2 bags of beans and 1 bag of rice.
This can be written as,

Then, the total number of bags of rice and beans is given as,

When we simplify the above equation, we get,

Hence we can conclude that the expression for rice and beans after the return is (4b+3r).
To know more about simplification, follow the link given below.
brainly.com/question/12616840.
Answer:
C
Step-by-step explanation:
43.5 x 10 = 435
435/1000 = 87/200 (simplified)