HELP HELP HELP! EASY 7TH GRADE QUESTION FIRST PERSON MARKED BRAINLIEST! PLEASE ANSWER CORRECTLY AND HONESTLY

Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height?

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two

Suppose that prices of a gallon of milk at various stores in one town have a mean of $3.71 with a standard deviation of $0.10. using chebyshev's theorem, what is the minimum percentage of stores that sell a gallon of milk for between $3.41 and $4.01? round your answer to one decimal place.