In the following expression, n is a rational number: which expression below is equivalent to this expression? a.-n(-0.7+(-0.7)) b.0.7n+0.7n c.-0.7n - 0.7n d.-0.7 * n +(-0.7)*(-n)

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

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?