Out of 1,600 people at a concert, 40 do not have a cell phone. What percent of the concert-goers have a cell phone?

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50.