Solve the equation for x. 2(5+3^x+2)=100

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

Put the equation in slope intercept form by solving for y

The mean of 10 values is 19. if further 5 values areincluded the mean becomes 20. what is the meanthese five additional values? a) 10b) 15c) 11d) 22