Round to the nearest while decimal 6.7

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

The cost of turkey is directly proportional to its weight. if a 12-pount turkey costs $27, how much does a 13-pound turkey cost? a. $33.75 b. $36.00 c. $31.00 d. $32.50

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6