What is -3 times x squared?-9x
Step-by-step explanation:
Given that,
A meal plan lets students buy $20 meal cards.
Each meal card lasts about 8 days.
Let us assume that y denotes number of days for a 20 dollar meal card i.e. $20 every 8 days.
Let x = number of $ for another day.
So,


Hence, this is the required equation.
The answer is c 19
38/2=19
Step-by-step explanation
Answer:
the cost of the table is
the cost of the chair is 
Step-by-step explanation:
Let
x-----> the cost of the table
y----> the cost of the chair
we know that
-----> equation A
-----> equation B
substitute equation B in equation A





Find the value of x
---->