Answer:
x=y
Step-by-step explanation:
-let x be the number of tennis balls and y the number of rackets.
-We divide the number of balls by the number of rackets to find out their ratio of proportionality:
-Hence, for each one tennis ball, there is a tennis racket.
#This is a direct linear relationship and is modeled as graphed in the attachment:
U do 21,800×12= AND THEN THATS ALL U DO GOOD LUCK!!!!!!
There would be an 85% change, you just add then divide them and you get 85% as your answer.
The basic facts she used to help her estimate are (c) 28 + 7 and (d) 30 + 5
<h3>What are estimates?</h3>
Estimates are approximated calculations that are used in place of an actual calculation
The expression is given as:
28 + 7
When the numbers are approximated to the nearest 5, we have:
30 + 5
Hence, the basic facts she used to help her estimate are (c) 28 + 7 and (d) 30 + 5
Read more about estimations at:
brainly.com/question/7068223