Patti's pet palace has a 90-gallon fish tank. when it needs to be cleaned, it can be drained at a rate of 2 gallons per minute. assuming the tank was full, and x represents the number of minutes the tank has been draining, which of the following equations represents the amount of water in the tank after x minutes?

y = 2x + 90

y = 90x - 2

y = 90 - 2x

y = 2x - 90

Mr. walker gave his class the function f(x) = (x + 3)(x + 5). four students made a claim about the function. each student’s claim is below. jeremiah: the y-intercept is at (15, 0). lindsay: the x-intercepts are at (–3, 0) and (5, 0). stephen: the vertex is at (–4, –1). alexis: the midpoint between the x-intercepts is at (4, 0). which student’s claim about the function is correct?

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

What is the sum of these mixed numbers 2 1/8 + 4 3/8