Emily is three years older than twice her sister mary’s age. the sum of their ages is less than 30.

let x represent mary's age.

which inequality represents mary’s possible age?

a. 0 < x < / = 9
b. 0 < x < / = 18
c. 0 < x < 18
d. 0 < x < 9

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126

What is the result of the following division?

The track team ran a mile and a quarter during their practice how many kilometers did her team runs?