Jack invests $5,000 in an account that pays 4.375% interest compounded monthly. What is his balance after 10 years?

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36