Simplify (3a

4 – 2a

2

+ 5a – 10) – (2a

4

+ 4a

2

+ 5a – 2).

a. a

4

+ 4a

2

+ 10a – 12

b. a

4

+ 2a

2

+ 10a – 12

c. 5a

4

+ 4a

3

+ 3a

2

+ 10a – 12

d. a

4 – 6a

2 – 8

Shania's test scores in 8 subjects were 88, 91, 85, 74, 69, 72, 80, and 87. shania found the middle number of her scores. which type of measure did she find?

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Which points are solutions to the linear inequality y < 0.5x + 2? check all that apply. (–3, –2) (–2, 1) (–1, –2) (–1, 2) (1, –2) (1, 2)