-11 is your answer. To get this, you should follow 'PEMDAS' which stands for P-parenthesis, E-exponents, M-multiplication, D-division, A-addition, S-subtraction. Which ever comes first, is how you solve your problem. Therefore, in your case, add the positives first, then subtract. Hope this helped!
Answer:
8 feet per second.
Step-by-step explanation:
We have been given that a car is driving away from a crosswalk. The formula expresses the car's distance from the crosswalk in feet, d, in terms of the number of seconds, t, since the car started moving.
We will use average change formula to solve our given problem.
Therefore, the the car's average speed over the given interval of time would be 8 feet per second.
Distribution method
(2x+6)(2x-6)
=4x^2-12x+12x-36
=4x^2-36
32, you are adding 4 to each number