10% is 7 dollars so 20% is 14 and have of 7 is 3.5 so it's 17.50
7+d=19 is the answer
subtract 7 from each side d=19-7
d=12
Answer:
x+y
Step-by-step explanation:
Let's pretend the value of the crayon's is 'y'. The value of the markers is 'x'. If we add them together, we get x+y. This is because we do not know the value of each variable.
Hope this helps! Have a nice day <3
Answer:
b) 0.0625
Step-by-step explanation: