4(3+x)
This is because 4*3=12 and 4*x is 4x so you get 12+4x which is the original equation
Answer:
A
Step-by-step explanation:
Because 45 + 2x = 180 divide it by 2 gives 4
Gotta be 40, since the sample probability of choosing a pink was 2/5, apply that to 100 chips and you get a predicted 40 pink chips in the bag
Simply distribute the -3 across the b and -7.
-3(b - 7) = (-3 * b) + (-3 * -7) = -3b + 21
Hope this was helpful, if it wasn't just drop me a DM explaining what didn't make sense.