Question

I really dont get why there are two NQ and 2 CA. can someone explain
1) Find the value of the variable and MN if N is between M and Q. Round to the nearest hundredth if necessary.

MQ = 5m + 1, NQ = 4m, NQ = 12

Select one:
a. m = 4, MN = 5
b. m = 3, MN = 4
c. m = 2, MN = 9
d. m = 3, MN = 16


2) Find the value of the variable and CD if A is between C and D.

CA = 8b, AD = 7b, CA = 56

Select one:
a. b = 3.73, CD = 29.87
b. b = 7, CD = 105
c. b = 8, CD = 120
d. b = 7, CD = 49

Answer 1

NQ = 4 m = 13
so
m = 3
MQ = 5 m + 1 = 15 + 1 = 16

Answer 2

8 b = 56
so b = 7
CD = 8 b + 7 b = 56 + 49 = 105