Express the product of 2.03 and 24 to the correct number of significant digits.
a. 48
b. 49
c. 48.7
d. 48.72

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

The area of a circle is equal to 1 dm². find the radius of the circle.

Tim has obtained a 3/27 balloon mortgage. after the initial period, he decided to refinance the balloon payment with a new 30-year mortgage. how many years will he be paying for his mortgage in total?