What does it mean to multiply 10 100 1000

Suppose you want just guess at the answers in a 5 question multiple-choice test. each question has 3 responses and only one is correct. what is the probability of getting two questions right just guessing? 20 points 0.3275 0.2753 0.7532 none of the above

Solve the system of equations. y= 2x y= x^2 - 15

Plz hurry evaluate the expression a+b where a=8 and b=19