I would substitute y = x^2
4y^2 -21y+20=0
Answer:
540$
Step-by-step explanation:
9x9 = 81
9 + 9 + 9 + 9 = 36
36 x 15 =540

Let's solve ~




Hence, the correct choice is D
Answer:
138.6
Step-by-step explanation:
Answer:
Not sure if I correctly did it but Stan is 56$ and Kyle is 44$, unless they meant how much they spent and were left with.
Step-by-step explanation:
50 + 6 = 56
34 + 10 = 44