Which expressions are equivalent to 5p+3p+(-9) Choose all answers that apply:
A) 8p+9
B) 3(p+(-3))+5p
C) none of the above

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position

3.4a=57.8 what is the the value of a