Answer:
-3/2 and 3/2
Step-by-step explanation:
y=4x^2-9
y=0
4x^2-9=0
4x^2=9
x^2=9/4
x1=-√9/4=-3/2
x2=√9/4=3/2
Answer:
The awnser in the first option. A
Answer:
The last one which you was on is correct.
Answer: 10 minutes
Step-by-step explanation:
Let x be minutes.
Toatl costs for a call are:
A: 35 + 3x
B: 45 + 2x
When will A = B?
35 + 3x = 45 + 2x
1x = 10
They are equal cost at 10 minutes
