What is the value of 2y+3 when y=4?

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

Determine the volume of a cylinder bucket if the diameter is 8.5 in. and the height is 11.5 in.

Average acceleration: i have no idea how to do this.