Determine quais são os coeficientes da equação 2x²-3x+7=0 a) a = 2, b = -3, c = 7
b) a = -2, b = 3, c = -7
c) a = 7, b = -3, c= 2
d) a = -3, b= 2, c = 7
e) Nenhuma das alternativas acima.

Which graph represents the following piecewise defined function?

Complete the table for different values of x in the polynomial expression -7x2 + 32x + 240. then, determine the optimal price that the taco truck should sell its tacos for. assume whole dollar amounts for the tacos.

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?