Write the standered equation of the circle (0,7)

Plz answer asap plz which is a solution to the equation 4b2 − 11b = 28 + 5b2? a) −5 b) −4 c) −3 d) 4

Acable car begins its trip by moving up a hill. as it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet. then, as the car moves down to the hill’s base, its elevation drops at the same rate.

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?