Answer:
43 and 56/12
Step-by-step explanation:
Let the number be 'x'.
Three times a number will then give 3x
Therefore the equation will be:
The very first one (the very left one)
Find the total length in inches of one of the rolls:
15*12=180 inches.
Now multiply the length of one roll (180 inches) by 2 to find the total length:
180*2=360 inches.
Divide by the width of the strips to find the total number of strips:
360/9=40 strips
Answer:
Set A
Step-by-step explanation:
By definition "a function may NOT have two y-values assigned to the same x-value, [but] it may have two x-values assigned to the same y-value."(https://mathbitsnotebook.com/Algebra1/Functions/FNFuncBasics.html)
Set A has follows this set of rules while Set B does not. Also if we graph it, Set B does not pass the vertical line test. (Learn about the vertical line test in the link below).
http://www.coolmath.com/algebra/15-functions/03-vertical-line-test-01
