5. Sam borrowed Php4,500 for 2 years and had to pay Php630 simple interest at the end of that time. What rate of interest did he pay?

Convert the cartesian equation (x 2 + y 2)2 = 4(x 2 - y 2) to a polar equation. choices: r4 = -4r2 r2 = 4cos2θ r2 = 4sin2θ

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.