Find the vertex and y-intercept for 5 and 6

5) y=x^2+8x+10

6) 3x^2-6x+7

If i purchase a product for $79.99 and two accessories for 9.99 and 7.00 how much will i owe after taxes applies 8.75%

Which number is located at point a on the number line? a number line is shown from negative 10 to 10 with each interval mark on the number line representing one unit. point a is labeled one interval mark to the right of negative 5.

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?