X^2 - 9....factor
= x^2 - 3^2
= (x+3)(x-3)
Are you asking what the 8 equal parts are ? If so 100/8=12.5
Answer:
Price of Caleb's groceries before tax= $6.4
Step-by-step explanation:
Let price of groceries before tax be = $ 
Sales tax % = 2.5%
Sales tax applied = 
Actual sales tax paid = $1.60
∴ 
Multiplying both sides by 100.


Dividing both sides by 25.


∴ Price of groceries before tax= $6.4
4x^2 + 16x-2= 5x
Minus 16x over
4x2-2= -11x
Add 11x over
4x^2 +11x -2
Use quadratic formula x= 2.9
I’m not sure here. I tried my best. Hope it helps!
1500m=1.5km so 1500 divided by 10= 150s it takes 150s to cover a distance of 1.5km