Multiply (1.2 ⋅ 1028) ⋅ (3 ⋅ 10−19). Express the answer in scientific notation. 3.6 ⋅ 109
3.6 ⋅ 1010
36 ⋅ 109
36 ⋅ 1010

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

Sam and jane must learn to spell certain words as part of their homework. the graph shows the number of words each one learns with respect to time. in how many minutes will they have learned to spell an equal number of words?