If δabc ~ δdef, what is the scale factor of δabc to δdef?
a: 1/2
b: 1/10
c: 2
d: 10

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

Asphere has a diameter of 10 in. what is the volume of the sphere?

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250