Minutes spent on home work: 18 20 22 11 19 18 18

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.