If tanA=x/y find the value of xsinA + y cosB

Which expression is equivalent to 2x^2+7x+4?

Apark is in the shape of a rectangle. the park authorities are planning to build a 2-meter-wide jogging path in the park (shown as the shaded region in the image). what is the area of the jogging path? plz

For what values of x is x2 + 2x = 24 true?