Which of the following is a composite number?
a. 31
b. 49
c. 73
d. 109
which pair of numbers is relatively prime?
a. 20 and 76
b. 25 and 65
c. 46 and 87
d. 63 and 117

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%