Pls 30 points

how many total dinners are $30 or more included in the histogram? show your work and explain how you solved using first, next, and last.

7 total dinner are worth $30 or more. but i don’t know what first next and last means

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.