Answer:
C
Step-by-step explanation:
3)

*************************************************************************************
6)

*************************************************************************************
7)

Answer:
51+(4x+7)=90
4x+58=90
-58 -58
4x=32
4x/4=32/4
x=8
Step-by-step explanation:
Tyler (T)= 17.04 gallons
Maria=6.2(T), Maria= 6.2x17.04=105.65 gallons