Your goal is to have x by itself
Send st to other side
rx= r+st
Divide by r so x stays alone
X=(r+st)/r
Which is also equal to
X=r/r+st/r
X= 1+st/r
The quotient of a number and -2 = n/-2 or = -n/2
Hope that helps.
It's the bottom one. 20 dollars has to be less than or equal to the amount. you cannot spend more than $20
Answer:
Graphed this on desmos, hope it helped!!
Step-by-step explanation: