Do the functions have the same concavity?
f(x)=-x^2-15x

A. Yes f and g both concave down

B. Yes, f and g both concave up

C. No, f is concave up and g is concave down

D. No, f is concave down and g is concave up

According to the data set, where should the upper quartile line of the box plot be placed?

Determine if this is a solution to the system

22 points algebra 1//sum and product of rational and irrational numbers. dont have to do all 4 if could much : )) write an example: 1) how the product of two identical irrational numbers can be a rational number. 2) how the product of two different irrational numbers can be a rational number. 3) write a quotient of intergers that is not a real number. 4) is the set of positive irrational numbers closed for the operation of division? if not give a counter example.