4a-9b=22
substitute b=-2
4a -9(-2) = 22
4a +18 =22
subtract 18 from each side
4a = 4
divide by 4
a =1
Choice C
Answer:
x²-5x-36
=> x²-9x+4x-36 = 0
=> x(x-9)+4(x-9)
=> (x-9) (x+4)
Step-by-step explanation:
Answer:
Option A
Step-by-step explanation:
I found it using a calculator online. Its called Desmos Graphing Calculator. Hopefully it can help in the future!
It represents that she tutored for 0 hours, and earned $0.
