Solve the following system of equations by the substitution method.

8x = 2y + 5
3x = y + 7

what is the solution set?

{(-41/2, -9/2)}
{(-9/2, -41/2)}
∅

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.