Which ratios are proportional to 14 : 21? choose all answers that are correct.
a. 2 : 3
b. 3 : 2
c. 28 : 63
d. 56 : 84

Through: (-3,-3) parallel to y= 7/3x+3

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?