Which type of interest can be described as interest that is earned on the principal amount only

If chord ab is congruent to chord cd, then what must be true about ef and eg?

Write the equation in logarithmic form e^x=403.429

Use your knowledge of the binary number system to write each binary number as a decimal number. a) 1001 base 2= base 10 b) 1101 base 2 = base 10