Help me? on a timer tysvm don't rush just need the correct answer.

Maria donates a fixed amount, a, to a charity each month. if she donates $300 in 12 months, what is the equation for a? a. a + 300 = 12 b. a × 300 = 12 c. a × 12 = 300 d. a + 12 = 300 e. a + 32 = 100

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse