Refer to the figure and find the volume generated by rotating the given region about the specified line. ℛ2 about ab.

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases by 40%.

Did the universe cool off or get hotter as it expanded after the 'big bang"?

Jim has found that he must consume 2,300 calories a day to reach his health goals, but he doesn't want to give up his afternoon snack of pretzels. unfortunately, he tends to eat the entire bag — which amounts to 1,300 calories! what strategy should jim use to improve his habits?