How does square root of 48 get to 4 times the square root of 3?

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

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

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is