Dinner was $75.00 (75.00 x .20 = $15)
Answer:
thanks
Step-by-step explanation:
x=4 x=-1
x^2-3x-4=0
x^2-4x+x-4=0
x(x-4) + 1(x-4)=0
x+1=0
x=-1
x-4=0
x=4
True
For example:
HCF of 2 and 3 is 1
