Josefina deposited $250 into her savings account. She then saved $40 per month. Which of the following equations shows a, the amount in Josefina’s saving account after t months? a = 250 + 40•t

a = 250 — 40•t

a = 40 + 250•t

a = 40 + 210•t

Suppose that x and y are both differentiable functions of t and are related by the given equation. use implicit differentiation with respect to t to determine startfraction dy over dt endfraction in terms of x, y, and startfraction dx over dt endfraction .

Write the expression in simplified radical form. show all steps and work including any foil method work. (hint: use the conjugate. no decimal answers.) (9-2√3)/(12+√3)

Could someone with number 1 and 2