What is the domain of h

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

Ateacher has $80 to buy workbooks. each work book cost $3. if she buys as many workbooks as possible, how much money does she have leftover? a) $2 b) $4 c) $6 d) $8

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys