the difference of two numbers is 9. if the larger number is one more than twice the smaller number, find the larger number

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 long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Graph the line with the given slope m and y-intercept b. m=-3,b=1