Solve the equation. c + 158 = 415

A. c= 157
B. c= 257
C. c= 473
D. c= 573

Find the slope of the line y =8/9x + 1.

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

The length of time it takes to find a parking space at 9 a.m. follows a normal distribution with a mean of 5 minutes and a standard deviation of 2 minutes. find the probability that it takes at least 8 minutes to find a parking space. (round your answer to four decimal places.)