The hotel room tax in Festivity City is calculated using the function 7 (x)=0.06x + 45, where x is the cost in dollars of the room and T (x) is the tax in dollars. What is the tax on a room that costs $ 120? A. $6.93
B. $7.20
C. $7.47
D. $11.70

Help plsss

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

We just started the introduction into circles and i have no idea how to do this.

Acylinder with a base diameter of x units has a volume of jxcubic units which statements about the cylinder are true? check all that apply. the radius of the cylinder is 2 x units. the radius of the cylinder is 2x units. the area of the cylinder's base is 200 square units. the area of the cylinder's base is a square units. the height of the cylinder is 2x units. the height of the cylinder is 4x units. mark this and return save and exit next submit