Astudent is solving the equation 81x^x-1=3^x+2. step 1: 81^x-1=3^x+2 step 2: (3^4)^x-1=3^x+2 step 3: 3^4x-4=3^x+2 which equation is the next step? a.4x-4=-(x+2) b. x-1=x+2 c.4x-4=x+2 d.4(x-1)=3(x+2)

Achel bought 12 rolls of packing tape and paid a total of $33.60. kevin also bought rolls of packing tape. the table shows the total amount he is paid for different numbers of packing tape. number of rolls of packing tape total amount paid 2 $6.40 5 $16.00 8 $25.60 how do the unit rates compare? select from the drop-down menus to correctly complete the statement. rachel's unit rate is than kevin's because is greater than .

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|

Corresponding angles are a. always b. sometimes c. never congruent