Use your calculator to work out the following and write all the figures from your display. a) (8.1 + 5.27) * (9.6 - 1.8)

b) (2.7 - 0.35)^2 + the cube root of 4.096

Can some one explain this i got sent this. is this a threat i’m scared

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. what is the probability that, in any seven-day week, the computer will crash less than 5 times? round your answer to four decimal places