Tiana uses the equation c=21h to figure out the total amount, c, she should charge a customer for babysitting for h hours. a. What is the constant of proportionality? What does it mean?

b. Tiana charges $94.50 for a job. How long did she babysit for? Show your work.

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.

central angle of a triangle has the same measure as its intercepted arc.

step-by-step explanation: