A length is measured at 21 cm correct to two significant figures, what is the lower bound of the length and upper bound?

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

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

Which of the following graphs represents the function f(x) = 2^x