Scientists estimate that the mass of the sun is 1.9891 x 10 kg. How many zeros are in this number when it is written in standard notation?
A 26
B 30
C 35
D 25

The axis of symmetry for the graph of the function f(x)=1/4^2+bx +10 is x=6. what is the value of b?

The amount of energy it takes to lift a box might be a function of which of the following

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )