49. Mary has $1 bills, $5 bills, $10 bills and $20 bills in her cash box. She would like to put groups of 3 bills into envelopes for prizes in a drawing. How many distinct groups of 3 bills can she make? (A) 20
(B) 35
(C) 28
(D) 15
(E) 21

The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257

What is the area of the trapezoid shown ?

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.