Amy has 3 children, and she is expecting another baby soon. her first three children are girls. what is the probability that the fourth baby is another girl?

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12