A list is made of all possible 2-digit whole numbers that result from using only the digits 1,3,5, and 7 in both the ones and tens place, with duplications allowed. How many whole numbers in the list are prime numbers?

A.6
B.7
C.8
D.9
E.10​

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

What is 20+(5 x 2/5 )+ 3 show your work

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?