Use the graph to estimate the solution to the quadratic system

Tanya has $42 to spend at the dolphin island store. tshirts sell for $7 each and a pair of sunglases sells for $6.tanya buys 3 tshirts. how many pairs of sunglases can she buys with the amount of money she has left

What are the possible rational zeros of [tex]f(x) = x^4+2x^3-3x^2-4x+18[/tex]

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?