Answer:
No
Step-by-step explanation:
7x+1 means 7 x X + 1
1xt7 means 1 x X x T x 7
so they are different
The answer to your question is true
1/18
there are 12 marbles in the bag
P(choose red) = 2/12 = 1/6
P(choose blue after replacement) = 4/12 = 1/3
P(choose red, then blue with replacement) = (1/6)(1/3) = 1/18