Your final score x is 12 points less than your friends final score
write and solve an equation to find tour final score

Did anything tell you what your friend's final score was?

EX. If their final score was 15, F= friend's final score . X= your final score

F-12=X
15-12=X
X=3

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post

Idon’t exactly understand but i think dbc=rst