Free points to all and I don't deserve it and u can have mine so free points to all and np anytime

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

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

It takes an ant farm 3 days to consume 1/2 of an apple. at that rate, in how many days will the ant farm consume 3 apples