What is 45x80?

How do you write one hundred fifty million in numbers? What is 46 pennies in decimal? What is one fourth cup plus one fourth cup equal? Find two numbers whose sum is 65 and whose difference is 7? What does the math term period mean? What is 1015 rounded to the nearest 10? Quadrangle with exactly 1 right angle you label the vertices a b c d with letter names the right angle? 49 increased by twice a number? How do you write 0.019 in expanded form? Who created the exponential function? How many significant figures is the measurement 124.0 cm taken using a RULER? What is a weak negative correlation? How many mililtres in a liter? Multiples of 3 and 5? How much is time and a half of 11.50? How many micrograms equals a nanogram? What must be added to eighty-three to make one hundred? What is 200 billion times 200 billion? 2 with a little 2 at the top means what? Nearest thousand of 6973?