By how many degrees did the low temperature increase from monday to tuesday?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Consider the following equation. 1/2x^3+x-7=-3sqrtx-1 approximate the solution to the equation using three iterations of successive approximation. use the graph below as a starting point. a. b. c. d.

3.4a=57.8 what is the the value of a