I need help what is 15 times 238

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

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

Question 5 spring semester final exam math evaluate