Which math expression represents the phrase? 9 times the sum of a number and 7
a. 9 · n+7
b. 9 · (n+7)
c. 9 · (n – 7)
d. 9 · (n · 7)

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%

The quadratic function h(t)=-16.1t^2+150 choose the graph representation