Marci has a total 50 stamps, consisting of 25 cent stamps and halves the number of 15 cent stamps, they will be worth of $16.50. how many 25 cent stamps and how many 15 cent stamps were there in the original 50?

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?