Which phrase describes a nonlinear relationship? a. The distance traveled by a car moving at constant speed in relation to time
b. The perimeter of a square in relation to the side length.
c. The cost of gasoline in relation to of the number of gallons purchased
d. The area of a circle in relation to the radius.

b. The perimeter of a square in relation to the side length.

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2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

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step-by-step explanation: