Simplify -3x(7x + 4y - 10). Choose the simplified expression. A-21x - 12xy + 30x
B.-21x - 12xy - 30x
C. -21x2 – 12xy + 30x
D. -21x2 + 12xy - 30x

Guests at an amusement park must be at least 54 inches tall to be able to ride the roller coaster. which graph represents the set of heights that satisfy this requirement?

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.

Acone with volume 1350 m³ is dilated by a scale factor of 1/3. what is the volume of the resulting cone? enter your answer in the box. m³