Answer:

Step-by-step explanation:
We want to solve for x in

We group constants on the right to get:

We apply difference of two squares




10-7=3, 7-5=2 so the pattern is -3,-2
Part b the answer is 6 mins because if you use the pattern -3,-2 and add it up minus 3 mins equals 2, and another 3 mins past and it’s -2 and 3 plus 3 is 6
Part C: 3 mins before she came the tank was full because if you switch the subtraction to addition it would be 7+3=10
Answer: A
Explanation: counted over 3, and it moves on the X
Answer:
7) p=80
8)z= 19.2
Step-by-step explanation:
7th problem)
0.1p=8
p *
=8
=8
p=80
8th problem)
=8
z=8*2.4
z=19.2