61. |190 - 210| + |19 - 21| + x = 100

in the equation above, what is the value of x?

a. 178

b. 188

c. 100

d. 122

e. 123

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums, 28 play drums, 18 play the guitar. what is the probability that the applicant who gets the job plays drums or guitar?