How many solutions does the equation have?
3(d +11) = 6(d + 33)
a. 0
b. 1
c. infinitely many

The answer is B. 1 because it only has the answer of d=-55

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